diff --git a/reference/constraints/All.rst b/reference/constraints/All.rst
index 34a59dfc9fe..157827df0cf 100644
--- a/reference/constraints/All.rst
+++ b/reference/constraints/All.rst
@@ -24,8 +24,8 @@ entry in that array:
 
     .. code-block:: php-annotations
 
-        // src/Acme/UserBundle/Entity/User.php
-        namespace Acme\UserBundle\Entity;
+        // src/AppBundle/Entity/User.php
+        namespace AppBundle\Entity;
 
         use Symfony\Component\Validator\Constraints as Assert;
 
@@ -42,8 +42,8 @@ entry in that array:
 
     .. code-block:: yaml
 
-        # src/Acme/UserBundle/Resources/config/validation.yml
-        Acme\UserBundle\Entity\User:
+        # src/AppBundle/Resources/config/validation.yml
+        AppBundle\Entity\User:
             properties:
                 favoriteColors:
                     - All:
@@ -53,13 +53,13 @@ entry in that array:
 
     .. code-block:: xml
 
-        <!-- src/Acme/UserBundle/Resources/config/validation.xml -->
+        <!-- src/AppBundle/Resources/config/validation.xml -->
         <?xml version="1.0" encoding="UTF-8" ?>
         <constraint-mapping xmlns="http://symfony.com/schema/dic/constraint-mapping"
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xsi:schemaLocation="http://symfony.com/schema/dic/constraint-mapping http://symfony.com/schema/dic/constraint-mapping/constraint-mapping-1.0.xsd">
 
-            <class name="Acme\UserBundle\Entity\User">
+            <class name="AppBundle\Entity\User">
                 <property name="favoriteColors">
                     <constraint name="All">
                         <option name="constraints">
@@ -75,8 +75,8 @@ entry in that array:
 
     .. code-block:: php
 
-        // src/Acme/UserBundle/Entity/User.php
-        namespace Acme\UserBundle\Entity;
+        // src/AppBundle/Entity/User.php
+        namespace AppBundle\Entity;
 
         use Symfony\Component\Validator\Mapping\ClassMetadata;
         use Symfony\Component\Validator\Constraints as Assert;
diff --git a/reference/constraints/Blank.rst b/reference/constraints/Blank.rst
index ce279e0630a..4b5ba5057ff 100644
--- a/reference/constraints/Blank.rst
+++ b/reference/constraints/Blank.rst
@@ -26,8 +26,8 @@ of an ``Author`` class were blank, you could do the following:
 
     .. code-block:: php-annotations
 
-        // src/Acme/BlogBundle/Entity/Author.php
-        namespace Acme\BlogBundle\Entity;
+        // src/AppBundle/Entity/Author.php
+        namespace AppBundle\Entity;
 
         use Symfony\Component\Validator\Constraints as Assert;
 
@@ -41,21 +41,21 @@ of an ``Author`` class were blank, you could do the following:
 
     .. code-block:: yaml
 
-        # src/Acme/BlogBundle/Resources/config/validation.yml
-        Acme\BlogBundle\Entity\Author:
+        # src/AppBundle/Resources/config/validation.yml
+        AppBundle\Entity\Author:
             properties:
                 firstName:
                     - Blank: ~
 
     .. code-block:: xml
 
-        <!-- src/Acme/BlogBundle/Resources/config/validation.xml -->
+        <!-- src/AppBundle/Resources/config/validation.xml -->
         <?xml version="1.0" encoding="UTF-8" ?>
         <constraint-mapping xmlns="http://symfony.com/schema/dic/constraint-mapping"
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xsi:schemaLocation="http://symfony.com/schema/dic/constraint-mapping http://symfony.com/schema/dic/constraint-mapping/constraint-mapping-1.0.xsd">
 
-            <class name="Acme\BlogBundle\Entity\Author">
+            <class name="AppBundle\Entity\Author">
                 <property name="firstName">
                     <constraint name="Blank" />
                 </property>
@@ -64,8 +64,8 @@ of an ``Author`` class were blank, you could do the following:
 
     .. code-block:: php
 
-        // src/Acme/BlogBundle/Entity/Author.php
-        namespace Acme\BlogBundle\Entity;
+        // src/AppBundle/Entity/Author.php
+        namespace AppBundle\Entity;
 
         use Symfony\Component\Validator\Mapping\ClassMetadata;
         use Symfony\Component\Validator\Constraints as Assert;
diff --git a/reference/constraints/Callback.rst b/reference/constraints/Callback.rst
index 5cd786fae69..a2bed55491b 100644
--- a/reference/constraints/Callback.rst
+++ b/reference/constraints/Callback.rst
@@ -34,8 +34,8 @@ Setup
 
     .. code-block:: php-annotations
 
-        // src/Acme/BlogBundle/Entity/Author.php
-        namespace Acme\BlogBundle\Entity;
+        // src/AppBundle/Entity/Author.php
+        namespace AppBundle\Entity;
 
         use Symfony\Component\Validator\Constraints as Assert;
 
@@ -48,21 +48,21 @@ Setup
 
     .. code-block:: yaml
 
-        # src/Acme/BlogBundle/Resources/config/validation.yml
-        Acme\BlogBundle\Entity\Author:
+        # src/AppBundle/Resources/config/validation.yml
+        AppBundle\Entity\Author:
             constraints:
                 - Callback:
                     methods:   [isAuthorValid]
 
     .. code-block:: xml
 
-        <!-- src/Acme/BlogBundle/Resources/config/validation.xml -->
+        <!-- src/AppBundle/Resources/config/validation.xml -->
         <?xml version="1.0" encoding="UTF-8" ?>
         <constraint-mapping xmlns="http://symfony.com/schema/dic/constraint-mapping"
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xsi:schemaLocation="http://symfony.com/schema/dic/constraint-mapping http://symfony.com/schema/dic/constraint-mapping/constraint-mapping-1.0.xsd">
 
-            <class name="Acme\BlogBundle\Entity\Author">
+            <class name="AppBundle\Entity\Author">
                 <constraint name="Callback">
                     <option name="methods">
                         <value>isAuthorValid</value>
@@ -73,8 +73,8 @@ Setup
 
     .. code-block:: php
 
-        // src/Acme/BlogBundle/Entity/Author.php
-        namespace Acme\BlogBundle\Entity;
+        // src/AppBundle/Entity/Author.php
+        namespace AppBundle\Entity;
 
         use Symfony\Component\Validator\Mapping\ClassMetadata;
         use Symfony\Component\Validator\Constraints as Assert;
@@ -147,12 +147,12 @@ process. Each method can be one of the following formats:
 
         .. code-block:: php-annotations
 
-            // src/Acme/BlogBundle/Entity/Author.php
+            // src/AppBundle/Entity/Author.php
             use Symfony\Component\Validator\Constraints as Assert;
 
             /**
              * @Assert\Callback(methods={
-             *     { "Acme\BlogBundle\MyStaticValidatorClass", "isAuthorValid" }
+             *     { "AppBundle\MyStaticValidatorClass", "isAuthorValid" }
              * })
              */
             class Author
@@ -161,26 +161,26 @@ process. Each method can be one of the following formats:
 
         .. code-block:: yaml
 
-            # src/Acme/BlogBundle/Resources/config/validation.yml
-            Acme\BlogBundle\Entity\Author:
+            # src/AppBundle/Resources/config/validation.yml
+            AppBundle\Entity\Author:
                 constraints:
                     - Callback:
                         methods:
-                            -    [Acme\BlogBundle\MyStaticValidatorClass, isAuthorValid]
+                            -    [AppBundle\MyStaticValidatorClass, isAuthorValid]
 
         .. code-block:: xml
 
-            <!-- src/Acme/BlogBundle/Resources/config/validation.xml -->
+            <!-- src/AppBundle/Resources/config/validation.xml -->
             <?xml version="1.0" encoding="UTF-8" ?>
             <constraint-mapping xmlns="http://symfony.com/schema/dic/constraint-mapping"
                 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
                 xsi:schemaLocation="http://symfony.com/schema/dic/constraint-mapping http://symfony.com/schema/dic/constraint-mapping/constraint-mapping-1.0.xsd">
 
-                <class name="Acme\BlogBundle\Entity\Author">
+                <class name="AppBundle\Entity\Author">
                     <constraint name="Callback">
                         <option name="methods">
                             <value>
-                                <value>Acme\BlogBundle\MyStaticValidatorClass</value>
+                                <value>AppBundle\MyStaticValidatorClass</value>
                                 <value>isAuthorValid</value>
                             </value>
                         </option>
@@ -190,7 +190,7 @@ process. Each method can be one of the following formats:
 
         .. code-block:: php
 
-            // src/Acme/BlogBundle/Entity/Author.php
+            // src/AppBundle/Entity/Author.php
 
             use Symfony\Component\Validator\Mapping\ClassMetadata;
             use Symfony\Component\Validator\Constraints\Callback;
@@ -204,7 +204,7 @@ process. Each method can be one of the following formats:
                     $metadata->addConstraint(new Callback(array(
                         'methods' => array(
                             array(
-                                'Acme\BlogBundle\MyStaticValidatorClass',
+                                'AppBundle\MyStaticValidatorClass',
                                 'isAuthorValid',
                             ),
                         ),
@@ -213,14 +213,14 @@ process. Each method can be one of the following formats:
             }
 
     In this case, the static method ``isAuthorValid`` will be called on
-    the ``Acme\BlogBundle\MyStaticValidatorClass`` class. It's passed both
+    the ``AppBundle\MyStaticValidatorClass`` class. It's passed both
     the original object being validated (e.g. ``Author``) as well as the
     ``ExecutionContextInterface``::
 
-        namespace Acme\BlogBundle;
+        namespace AppBundle;
 
         use Symfony\Component\Validator\ExecutionContextInterface;
-        use Acme\BlogBundle\Entity\Author;
+        use AppBundle\Entity\Author;
 
         class MyStaticValidatorClass
         {
diff --git a/reference/constraints/CardScheme.rst b/reference/constraints/CardScheme.rst
index efc7312a198..652e7b5f8cf 100644
--- a/reference/constraints/CardScheme.rst
+++ b/reference/constraints/CardScheme.rst
@@ -29,8 +29,8 @@ on an object that will contain a credit card number.
 
     .. code-block:: php-annotations
 
-        // src/Acme/SubscriptionBundle/Entity/Transaction.php
-        namespace Acme\SubscriptionBundle\Entity\Transaction;
+        // src/AppBundle/Entity/Transaction.php
+        namespace AppBundle\Entity\Transaction;
 
         use Symfony\Component\Validator\Constraints as Assert;
 
@@ -47,8 +47,8 @@ on an object that will contain a credit card number.
 
     .. code-block:: yaml
 
-        # src/Acme/SubscriptionBundle/Resources/config/validation.yml
-        Acme\SubscriptionBundle\Entity\Transaction:
+        # src/AppBundle/Resources/config/validation.yml
+        AppBundle\Entity\Transaction:
             properties:
                 cardNumber:
                     - CardScheme:
@@ -57,13 +57,13 @@ on an object that will contain a credit card number.
 
     .. code-block:: xml
 
-        <!-- src/Acme/SubscriptionBundle/Resources/config/validation.xml -->
+        <!-- src/AppBundle/Resources/config/validation.xml -->
         <?xml version="1.0" encoding="UTF-8" ?>
         <constraint-mapping xmlns="http://symfony.com/schema/dic/constraint-mapping"
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xsi:schemaLocation="http://symfony.com/schema/dic/constraint-mapping http://symfony.com/schema/dic/constraint-mapping/constraint-mapping-1.0.xsd">
 
-            <class name="Acme\SubscriptionBundle\Entity\Transaction">
+            <class name="AppBundle\Entity\Transaction">
                 <property name="cardNumber">
                     <constraint name="CardScheme">
                         <option name="schemes">
@@ -77,8 +77,8 @@ on an object that will contain a credit card number.
 
     .. code-block:: php
 
-        // src/Acme/SubscriptionBundle/Entity/Transaction.php
-        namespace Acme\SubscriptionBundle\Entity\Transaction;
+        // src/AppBundle/Entity/Transaction.php
+        namespace AppBundle\Entity\Transaction;
 
         use Symfony\Component\Validator\Mapping\ClassMetadata;
         use Symfony\Component\Validator\Constraints as Assert;
diff --git a/reference/constraints/Choice.rst b/reference/constraints/Choice.rst
index fc991091b8e..aeeadee7a64 100644
--- a/reference/constraints/Choice.rst
+++ b/reference/constraints/Choice.rst
@@ -38,8 +38,8 @@ If your valid choice list is simple, you can pass them in directly via the
 
     .. code-block:: php-annotations
 
-        // src/Acme/BlogBundle/Entity/Author.php
-        namespace Acme\BlogBundle\Entity;
+        // src/AppBundle/Entity/Author.php
+        namespace AppBundle\Entity;
 
         use Symfony\Component\Validator\Constraints as Assert;
 
@@ -53,8 +53,8 @@ If your valid choice list is simple, you can pass them in directly via the
 
     .. code-block:: yaml
 
-        # src/Acme/BlogBundle/Resources/config/validation.yml
-        Acme\BlogBundle\Entity\Author:
+        # src/AppBundle/Resources/config/validation.yml
+        AppBundle\Entity\Author:
             properties:
                 gender:
                     - Choice:
@@ -63,13 +63,13 @@ If your valid choice list is simple, you can pass them in directly via the
 
     .. code-block:: xml
 
-        <!-- src/Acme/BlogBundle/Resources/config/validation.xml -->
+        <!-- src/AppBundle/Resources/config/validation.xml -->
         <?xml version="1.0" encoding="UTF-8" ?>
         <constraint-mapping xmlns="http://symfony.com/schema/dic/constraint-mapping"
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xsi:schemaLocation="http://symfony.com/schema/dic/constraint-mapping http://symfony.com/schema/dic/constraint-mapping/constraint-mapping-1.0.xsd">
 
-            <class name="Acme\BlogBundle\Entity\Author">
+            <class name="AppBundle\Entity\Author">
                 <property name="gender">
                     <constraint name="Choice">
                         <option name="choices">
@@ -84,8 +84,8 @@ If your valid choice list is simple, you can pass them in directly via the
 
     .. code-block:: php
 
-        // src/Acme/BlogBundle/EntityAuthor.php
-        namespace Acme\BlogBundle\Entity;
+        // src/AppBundle/EntityAuthor.php
+        namespace AppBundle\Entity;
 
         use Symfony\Component\Validator\Mapping\ClassMetadata;
         use Symfony\Component\Validator\Constraints as Assert;
@@ -113,8 +113,8 @@ form element.
 
 .. code-block:: php
 
-    // src/Acme/BlogBundle/Entity/Author.php
-    namespace Acme\BlogBundle\Entity;
+    // src/AppBundle/Entity/Author.php
+    namespace AppBundle\Entity;
 
     class Author
     {
@@ -131,8 +131,8 @@ constraint.
 
     .. code-block:: php-annotations
 
-        // src/Acme/BlogBundle/Entity/Author.php
-        namespace Acme\BlogBundle\Entity;
+        // src/AppBundle/Entity/Author.php
+        namespace AppBundle\Entity;
 
         use Symfony\Component\Validator\Constraints as Assert;
 
@@ -146,21 +146,21 @@ constraint.
 
     .. code-block:: yaml
 
-        # src/Acme/BlogBundle/Resources/config/validation.yml
-        Acme\BlogBundle\Entity\Author:
+        # src/AppBundle/Resources/config/validation.yml
+        AppBundle\Entity\Author:
             properties:
                 gender:
                     - Choice: { callback: getGenders }
 
     .. code-block:: xml
 
-        <!-- src/Acme/BlogBundle/Resources/config/validation.xml -->
+        <!-- src/AppBundle/Resources/config/validation.xml -->
         <?xml version="1.0" encoding="UTF-8" ?>
         <constraint-mapping xmlns="http://symfony.com/schema/dic/constraint-mapping"
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xsi:schemaLocation="http://symfony.com/schema/dic/constraint-mapping http://symfony.com/schema/dic/constraint-mapping/constraint-mapping-1.0.xsd">
 
-            <class name="Acme\BlogBundle\Entity\Author">
+            <class name="AppBundle\Entity\Author">
                 <property name="gender">
                     <constraint name="Choice">
                         <option name="callback">getGenders</option>
@@ -171,8 +171,8 @@ constraint.
 
     .. code-block:: php
 
-        // src/Acme/BlogBundle/EntityAuthor.php
-        namespace Acme\BlogBundle\Entity;
+        // src/AppBundle/EntityAuthor.php
+        namespace AppBundle\Entity;
 
         use Symfony\Component\Validator\Mapping\ClassMetadata;
         use Symfony\Component\Validator\Constraints as Assert;
@@ -196,8 +196,8 @@ you can pass the class name and the method as an array.
 
     .. code-block:: php-annotations
 
-        // src/Acme/BlogBundle/Entity/Author.php
-        namespace Acme\BlogBundle\Entity;
+        // src/AppBundle/Entity/Author.php
+        namespace AppBundle\Entity;
 
         use Symfony\Component\Validator\Constraints as Assert;
 
@@ -211,21 +211,21 @@ you can pass the class name and the method as an array.
 
     .. code-block:: yaml
 
-        # src/Acme/BlogBundle/Resources/config/validation.yml
-        Acme\BlogBundle\Entity\Author:
+        # src/AppBundle/Resources/config/validation.yml
+        AppBundle\Entity\Author:
             properties:
                 gender:
                     - Choice: { callback: [Util, getGenders] }
 
     .. code-block:: xml
 
-        <!-- src/Acme/BlogBundle/Resources/config/validation.xml -->
+        <!-- src/AppBundle/Resources/config/validation.xml -->
         <?xml version="1.0" encoding="UTF-8" ?>
         <constraint-mapping xmlns="http://symfony.com/schema/dic/constraint-mapping"
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xsi:schemaLocation="http://symfony.com/schema/dic/constraint-mapping http://symfony.com/schema/dic/constraint-mapping/constraint-mapping-1.0.xsd">
 
-            <class name="Acme\BlogBundle\Entity\Author">
+            <class name="AppBundle\Entity\Author">
                 <property name="gender">
                     <constraint name="Choice">
                         <option name="callback">
@@ -239,8 +239,8 @@ you can pass the class name and the method as an array.
 
     .. code-block:: php
 
-        // src/Acme/BlogBundle/EntityAuthor.php
-        namespace Acme\BlogBundle\Entity;
+        // src/AppBundle/EntityAuthor.php
+        namespace AppBundle\Entity;
 
         use Symfony\Component\Validator\Mapping\ClassMetadata;
         use Symfony\Component\Validator\Constraints as Assert;
diff --git a/reference/constraints/Collection.rst b/reference/constraints/Collection.rst
index a4503c53ba4..74a9ff9a355 100644
--- a/reference/constraints/Collection.rst
+++ b/reference/constraints/Collection.rst
@@ -31,8 +31,8 @@ Basic Usage
 The ``Collection`` constraint allows you to validate the different keys
 of a collection individually. Take the following example::
 
-    // src/Acme/BlogBundle/Entity/Author.php
-    namespace Acme\BlogBundle\Entity;
+    // src/AppBundle/Entity/Author.php
+    namespace AppBundle\Entity;
 
     class Author
     {
@@ -56,8 +56,8 @@ following:
 
     .. code-block:: php-annotations
 
-        // src/Acme/BlogBundle/Entity/Author.php
-        namespace Acme\BlogBundle\Entity;
+        // src/AppBundle/Entity/Author.php
+        namespace AppBundle\Entity;
 
         use Symfony\Component\Validator\Constraints as Assert;
 
@@ -86,8 +86,8 @@ following:
 
     .. code-block:: yaml
 
-        # src/Acme/BlogBundle/Resources/config/validation.yml
-        Acme\BlogBundle\Entity\Author:
+        # src/AppBundle/Resources/config/validation.yml
+        AppBundle\Entity\Author:
             properties:
                 profileData:
                     - Collection:
@@ -102,13 +102,13 @@ following:
 
     .. code-block:: xml
 
-        <!-- src/Acme/BlogBundle/Resources/config/validation.xml -->
+        <!-- src/AppBundle/Resources/config/validation.xml -->
         <?xml version="1.0" encoding="UTF-8" ?>
         <constraint-mapping xmlns="http://symfony.com/schema/dic/constraint-mapping"
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xsi:schemaLocation="http://symfony.com/schema/dic/constraint-mapping http://symfony.com/schema/dic/constraint-mapping/constraint-mapping-1.0.xsd">
 
-            <class name="Acme\BlogBundle\Entity\Author">
+            <class name="AppBundle\Entity\Author">
                 <property name="profileData">
                     <constraint name="Collection">
                         <option name="fields">
@@ -131,8 +131,8 @@ following:
 
     .. code-block:: php
 
-        // src/Acme/BlogBundle/Entity/Author.php
-        namespace Acme\BlogBundle\Entity;
+        // src/AppBundle/Entity/Author.php
+        namespace AppBundle\Entity;
 
         use Symfony\Component\Validator\Mapping\ClassMetadata;
         use Symfony\Component\Validator\Constraints as Assert;
@@ -195,8 +195,8 @@ you can do the following:
 
     .. code-block:: php-annotations
 
-        // src/Acme/BlogBundle/Entity/Author.php
-        namespace Acme\BlogBundle\Entity;
+        // src/AppBundle/Entity/Author.php
+        namespace AppBundle\Entity;
 
         use Symfony\Component\Validator\Constraints as Assert;
 
@@ -215,8 +215,8 @@ you can do the following:
 
     .. code-block:: yaml
 
-        # src/Acme/BlogBundle/Resources/config/validation.yml
-        Acme\BlogBundle\Entity\Author:
+        # src/AppBundle/Resources/config/validation.yml
+        AppBundle\Entity\Author:
             properties:
                 profile_data:
                     - Collection:
@@ -231,13 +231,13 @@ you can do the following:
 
     .. code-block:: xml
 
-        <!-- src/Acme/BlogBundle/Resources/config/validation.xml -->
+        <!-- src/AppBundle/Resources/config/validation.xml -->
         <?xml version="1.0" encoding="UTF-8" ?>
         <constraint-mapping xmlns="http://symfony.com/schema/dic/constraint-mapping"
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xsi:schemaLocation="http://symfony.com/schema/dic/constraint-mapping http://symfony.com/schema/dic/constraint-mapping/constraint-mapping-1.0.xsd">
 
-            <class name="Acme\BlogBundle\Entity\Author">
+            <class name="AppBundle\Entity\Author">
                 <property name="profile_data">
                     <constraint name="Collection">
                         <option name="fields">
@@ -260,8 +260,8 @@ you can do the following:
 
     .. code-block:: php
 
-        // src/Acme/BlogBundle/Entity/Author.php
-        namespace Acme\BlogBundle\Entity;
+        // src/AppBundle/Entity/Author.php
+        namespace AppBundle\Entity;
 
         use Symfony\Component\Validator\Mapping\ClassMetadata;
         use Symfony\Component\Validator\Constraints as Assert;
diff --git a/reference/constraints/Count.rst b/reference/constraints/Count.rst
index b51c798963c..235ed88a816 100644
--- a/reference/constraints/Count.rst
+++ b/reference/constraints/Count.rst
@@ -28,8 +28,8 @@ you might add the following:
 
     .. code-block:: php-annotations
 
-        // src/Acme/EventBundle/Entity/Participant.php
-        namespace Acme\EventBundle\Entity;
+        // src/AppBundle/Entity/Participant.php
+        namespace AppBundle\Entity;
 
         use Symfony\Component\Validator\Constraints as Assert;
 
@@ -48,8 +48,8 @@ you might add the following:
 
     .. code-block:: yaml
 
-        # src/Acme/EventBundle/Resources/config/validation.yml
-        Acme\EventBundle\Entity\Participant:
+        # src/AppBundle/Resources/config/validation.yml
+        AppBundle\Entity\Participant:
             properties:
                 emails:
                     - Count:
@@ -60,13 +60,13 @@ you might add the following:
 
     .. code-block:: xml
 
-        <!-- src/Acme/EventBundle/Resources/config/validation.xml -->
+        <!-- src/AppBundle/Resources/config/validation.xml -->
         <?xml version="1.0" encoding="UTF-8" ?>
         <constraint-mapping xmlns="http://symfony.com/schema/dic/constraint-mapping"
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xsi:schemaLocation="http://symfony.com/schema/dic/constraint-mapping http://symfony.com/schema/dic/constraint-mapping/constraint-mapping-1.0.xsd">
 
-            <class name="Acme\EventBundle\Entity\Participant">
+            <class name="AppBundle\Entity\Participant">
                 <property name="emails">
                     <constraint name="Count">
                         <option name="min">1</option>
@@ -80,8 +80,8 @@ you might add the following:
 
     .. code-block:: php
 
-        // src/Acme/EventBundle/Entity/Participant.php
-        namespace Acme\EventBundle\Entity;
+        // src/AppBundle/Entity/Participant.php
+        namespace AppBundle\Entity;
 
         use Symfony\Component\Validator\Mapping\ClassMetadata;
         use Symfony\Component\Validator\Constraints as Assert;
diff --git a/reference/constraints/Country.rst b/reference/constraints/Country.rst
index 9692830ae6b..82a990d8435 100644
--- a/reference/constraints/Country.rst
+++ b/reference/constraints/Country.rst
@@ -20,8 +20,8 @@ Basic Usage
 
     .. code-block:: php-annotations
 
-        // src/Acme/UserBundle/Entity/User.php
-        namespace Acme\UserBundle\Entity;
+        // src/AppBundle/Entity/User.php
+        namespace AppBundle\Entity;
 
         use Symfony\Component\Validator\Constraints as Assert;
 
@@ -35,21 +35,21 @@ Basic Usage
 
     .. code-block:: yaml
 
-        # src/Acme/UserBundle/Resources/config/validation.yml
-        Acme\UserBundle\Entity\User:
+        # src/AppBundle/Resources/config/validation.yml
+        AppBundle\Entity\User:
             properties:
                 country:
                     - Country: ~
 
     .. code-block:: xml
 
-        <!-- src/Acme/UserBundle/Resources/config/validation.xml -->
+        <!-- src/AppBundle/Resources/config/validation.xml -->
         <?xml version="1.0" encoding="UTF-8" ?>
         <constraint-mapping xmlns="http://symfony.com/schema/dic/constraint-mapping"
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xsi:schemaLocation="http://symfony.com/schema/dic/constraint-mapping http://symfony.com/schema/dic/constraint-mapping/constraint-mapping-1.0.xsd">
 
-            <class name="Acme\UserBundle\Entity\User">
+            <class name="AppBundle\Entity\User">
                 <property name="country">
                     <constraint name="Country" />
                 </property>
@@ -58,8 +58,8 @@ Basic Usage
 
     .. code-block:: php
 
-        // src/Acme/UserBundle/Entity/User.php
-        namespace Acme\UserBundle\Entity;
+        // src/AppBundle/Entity/User.php
+        namespace AppBundle\Entity;
 
         use Symfony\Component\Validator\Mapping\ClassMetadata;
         use Symfony\Component\Validator\Constraints as Assert;
diff --git a/reference/constraints/Currency.rst b/reference/constraints/Currency.rst
index 5292d92166f..c1264c0ad4c 100644
--- a/reference/constraints/Currency.rst
+++ b/reference/constraints/Currency.rst
@@ -26,8 +26,8 @@ a valid currency, you could do the following:
 
     .. code-block:: php-annotations
 
-        // src/Acme/EcommerceBundle/Entity/Order.php
-        namespace Acme\EcommerceBundle\Entity;
+        // src/AppBundle/Entity/Order.php
+        namespace AppBundle\Entity;
 
         use Symfony\Component\Validator\Constraints as Assert;
 
@@ -41,21 +41,21 @@ a valid currency, you could do the following:
 
     .. code-block:: yaml
 
-        # src/Acme/EcommerceBundle/Resources/config/validation.yml
-        Acme\EcommerceBundle\Entity\Order:
+        # src/AppBundle/Resources/config/validation.yml
+        AppBundle\Entity\Order:
             properties:
                 currency:
                     - Currency: ~
 
     .. code-block:: xml
 
-        <!-- src/Acme/EcommerceBundle/Resources/config/validation.xml -->
+        <!-- src/AppBundle/Resources/config/validation.xml -->
         <?xml version="1.0" encoding="UTF-8" ?>
         <constraint-mapping xmlns="http://symfony.com/schema/dic/constraint-mapping"
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xsi:schemaLocation="http://symfony.com/schema/dic/constraint-mapping http://symfony.com/schema/dic/constraint-mapping/constraint-mapping-1.0.xsd">
 
-            <class name="Acme\EcommerceBundle\Entity\Order">
+            <class name="AppBundle\Entity\Order">
                 <property name="currency">
                     <constraint name="Currency" />
                 </property>
@@ -64,8 +64,8 @@ a valid currency, you could do the following:
 
     .. code-block:: php
 
-        // src/Acme/EcommerceBundle/Entity/Order.php
-        namespace Acme\SocialBundle\Entity;
+        // src/AppBundle/Entity/Order.php
+        namespace AppBundle\Entity;
 
         use Symfony\Component\Validator\Mapping\ClassMetadata;
         use Symfony\Component\Validator\Constraints as Assert;
diff --git a/reference/constraints/Date.rst b/reference/constraints/Date.rst
index 62bc0f98a05..2c4a7f90479 100644
--- a/reference/constraints/Date.rst
+++ b/reference/constraints/Date.rst
@@ -22,8 +22,8 @@ Basic Usage
 
     .. code-block:: php-annotations
 
-        // src/Acme/BlogBundle/Entity/Author.php
-        namespace Acme\BlogBundle\Entity;
+        // src/AppBundle/Entity/Author.php
+        namespace AppBundle\Entity;
 
         use Symfony\Component\Validator\Constraints as Assert;
 
@@ -37,21 +37,21 @@ Basic Usage
 
     .. code-block:: yaml
 
-        # src/Acme/BlogBundle/Resources/config/validation.yml
-        Acme\BlogBundle\Entity\Author:
+        # src/AppBundle/Resources/config/validation.yml
+        AppBundle\Entity\Author:
             properties:
                 birthday:
                     - Date: ~
 
     .. code-block:: xml
 
-        <!-- src/Acme/BlogBundle/Resources/config/validation.xml -->
+        <!-- src/AppBundle/Resources/config/validation.xml -->
         <?xml version="1.0" encoding="UTF-8" ?>
         <constraint-mapping xmlns="http://symfony.com/schema/dic/constraint-mapping"
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xsi:schemaLocation="http://symfony.com/schema/dic/constraint-mapping http://symfony.com/schema/dic/constraint-mapping/constraint-mapping-1.0.xsd">
 
-            <class name="Acme\BlogBundle\Entity\Author">
+            <class name="AppBundle\Entity\Author">
                 <property name="birthday">
                     <constraint name="Date" />
                 </property>
@@ -60,8 +60,8 @@ Basic Usage
 
     .. code-block:: php
 
-        // src/Acme/BlogBundle/Entity/Author.php
-        namespace Acme\BlogBundle\Entity;
+        // src/AppBundle/Entity/Author.php
+        namespace AppBundle\Entity;
 
         use Symfony\Component\Validator\Mapping\ClassMetadata;
         use Symfony\Component\Validator\Constraints as Assert;
diff --git a/reference/constraints/DateTime.rst b/reference/constraints/DateTime.rst
index 4060e2f0c4f..5332fca7d22 100644
--- a/reference/constraints/DateTime.rst
+++ b/reference/constraints/DateTime.rst
@@ -22,8 +22,8 @@ Basic Usage
 
     .. code-block:: php-annotations
 
-        // src/Acme/BlogBundle/Entity/Author.php
-        namespace Acme\BlogBundle\Entity;
+        // src/AppBundle/Entity/Author.php
+        namespace AppBundle\Entity;
 
         use Symfony\Component\Validator\Constraints as Assert;
 
@@ -37,21 +37,21 @@ Basic Usage
 
     .. code-block:: yaml
 
-        # src/Acme/BlogBundle/Resources/config/validation.yml
-        Acme\BlogBundle\Entity\Author:
+        # src/AppBundle/Resources/config/validation.yml
+        AppBundle\Entity\Author:
             properties:
                 createdAt:
                     - DateTime: ~
 
     .. code-block:: xml
 
-        <!-- src/Acme/UserBundle/Resources/config/validation.xml -->
+        <!-- src/AppBundle/Resources/config/validation.xml -->
         <?xml version="1.0" encoding="UTF-8" ?>
         <constraint-mapping xmlns="http://symfony.com/schema/dic/constraint-mapping"
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xsi:schemaLocation="http://symfony.com/schema/dic/constraint-mapping http://symfony.com/schema/dic/constraint-mapping/constraint-mapping-1.0.xsd">
 
-            <class name="Acme\BlogBundle\Entity\Author">
+            <class name="AppBundle\Entity\Author">
                 <property name="createdAt">
                     <constraint name="DateTime" />
                 </property>
@@ -60,8 +60,8 @@ Basic Usage
 
     .. code-block:: php
 
-        // src/Acme/BlogBundle/Entity/Author.php
-        namespace Acme\BlogBundle\Entity;
+        // src/AppBundle/Entity/Author.php
+        namespace AppBundle\Entity;
 
         use Symfony\Component\Validator\Mapping\ClassMetadata;
         use Symfony\Component\Validator\Constraints as Assert;
diff --git a/reference/constraints/Email.rst b/reference/constraints/Email.rst
index bdc129c765a..8bf87e31a96 100644
--- a/reference/constraints/Email.rst
+++ b/reference/constraints/Email.rst
@@ -23,8 +23,8 @@ Basic Usage
 
     .. code-block:: php-annotations
 
-        // src/Acme/BlogBundle/Entity/Author.php
-        namespace Acme\BlogBundle\Entity;
+        // src/AppBundle/Entity/Author.php
+        namespace AppBundle\Entity;
 
         use Symfony\Component\Validator\Constraints as Assert;
 
@@ -41,8 +41,8 @@ Basic Usage
 
     .. code-block:: yaml
 
-        # src/Acme/BlogBundle/Resources/config/validation.yml
-        Acme\BlogBundle\Entity\Author:
+        # src/AppBundle/Resources/config/validation.yml
+        AppBundle\Entity\Author:
             properties:
                 email:
                     - Email:
@@ -51,13 +51,13 @@ Basic Usage
 
     .. code-block:: xml
 
-        <!-- src/Acme/BlogBundle/Resources/config/validation.xml -->
+        <!-- src/AppBundle/Resources/config/validation.xml -->
         <?xml version="1.0" encoding="UTF-8" ?>
         <constraint-mapping xmlns="http://symfony.com/schema/dic/constraint-mapping"
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xsi:schemaLocation="http://symfony.com/schema/dic/constraint-mapping http://symfony.com/schema/dic/constraint-mapping/constraint-mapping-1.0.xsd">
 
-            <class name="Acme\BlogBundle\Entity\Author">
+            <class name="AppBundle\Entity\Author">
                 <property name="email">
                     <constraint name="Email">
                         <option name="message">The email "{{ value }}" is not a valid email.</option>
@@ -69,8 +69,8 @@ Basic Usage
 
     .. code-block:: php
 
-        // src/Acme/BlogBundle/Entity/Author.php
-        namespace Acme\BlogBundle\Entity;
+        // src/AppBundle/Entity/Author.php
+        namespace AppBundle\Entity;
 
         use Symfony\Component\Validator\Mapping\ClassMetadata;
         use Symfony\Component\Validator\Constraints as Assert;
diff --git a/reference/constraints/EqualTo.rst b/reference/constraints/EqualTo.rst
index d9408eb6e65..1603d938757 100644
--- a/reference/constraints/EqualTo.rst
+++ b/reference/constraints/EqualTo.rst
@@ -34,8 +34,8 @@ If you want to ensure that the ``age`` of a ``Person`` class is equal to
 
     .. code-block:: php-annotations
 
-        // src/Acme/SocialBundle/Entity/Person.php
-        namespace Acme\SocialBundle\Entity;
+        // src/AppBundle/Entity/Person.php
+        namespace AppBundle\Entity;
 
         use Symfony\Component\Validator\Constraints as Assert;
 
@@ -51,8 +51,8 @@ If you want to ensure that the ``age`` of a ``Person`` class is equal to
 
     .. code-block:: yaml
 
-        # src/Acme/SocialBundle/Resources/config/validation.yml
-        Acme\SocialBundle\Entity\Person:
+        # src/AppBundle/Resources/config/validation.yml
+        AppBundle\Entity\Person:
             properties:
                 age:
                     - EqualTo:
@@ -60,13 +60,13 @@ If you want to ensure that the ``age`` of a ``Person`` class is equal to
 
     .. code-block:: xml
 
-        <!-- src/Acme/SocialBundle/Resources/config/validation.xml -->
+        <!-- src/AppBundle/Resources/config/validation.xml -->
         <?xml version="1.0" encoding="UTF-8" ?>
         <constraint-mapping xmlns="http://symfony.com/schema/dic/constraint-mapping"
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xsi:schemaLocation="http://symfony.com/schema/dic/constraint-mapping http://symfony.com/schema/dic/constraint-mapping/constraint-mapping-1.0.xsd">
 
-            <class name="Acme\SocialBundle\Entity\Person">
+            <class name="AppBundle\Entity\Person">
                 <property name="age">
                     <constraint name="EqualTo">
                         <option name="value">20</option>
@@ -77,8 +77,8 @@ If you want to ensure that the ``age`` of a ``Person`` class is equal to
 
     .. code-block:: php
 
-        // src/Acme/SocialBundle/Entity/Person.php
-        namespace Acme\SocialBundle\Entity;
+        // src/AppBundle/Entity/Person.php
+        namespace AppBundle\Entity;
 
         use Symfony\Component\Validator\Mapping\ClassMetadata;
         use Symfony\Component\Validator\Constraints as Assert;
diff --git a/reference/constraints/False.rst b/reference/constraints/False.rst
index 70fd50e4900..26984384390 100644
--- a/reference/constraints/False.rst
+++ b/reference/constraints/False.rst
@@ -41,8 +41,8 @@ method returns **false**:
 
     .. code-block:: php-annotations
 
-        // src/Acme/BlogBundle/Entity/Author.php
-        namespace Acme\BlogBundle\Entity;
+        // src/AppBundle/Entity/Author.php
+        namespace AppBundle\Entity;
 
         use Symfony\Component\Validator\Constraints as Assert;
 
@@ -61,8 +61,8 @@ method returns **false**:
 
     .. code-block:: yaml
 
-        # src/Acme/BlogBundle/Resources/config/validation.yml
-        Acme\BlogBundle\Entity\Author
+        # src/AppBundle/Resources/config/validation.yml
+        AppBundle\Entity\Author
             getters:
                 stateInvalid:
                     - 'False':
@@ -70,13 +70,13 @@ method returns **false**:
 
     .. code-block:: xml
 
-        <!-- src/Acme/BlogBundle/Resources/config/validation.xml -->
+        <!-- src/AppBundle/Resources/config/validation.xml -->
         <?xml version="1.0" encoding="UTF-8" ?>
         <constraint-mapping xmlns="http://symfony.com/schema/dic/constraint-mapping"
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xsi:schemaLocation="http://symfony.com/schema/dic/constraint-mapping http://symfony.com/schema/dic/constraint-mapping/constraint-mapping-1.0.xsd">
 
-            <class name="Acme\BlogBundle\Entity\Author">
+            <class name="AppBundle\Entity\Author">
                 <getter property="stateInvalid">
                     <constraint name="False">
                         <option name="message">You've entered an invalid state.</option>
@@ -87,8 +87,8 @@ method returns **false**:
 
     .. code-block:: php
 
-        // src/Acme/BlogBundle/Entity/Author.php
-        namespace Acme\BlogBundle\Entity;
+        // src/AppBundle/Entity/Author.php
+        namespace AppBundle\Entity;
 
         use Symfony\Component\Validator\Mapping\ClassMetadata;
         use Symfony\Component\Validator\Constraints as Assert;
diff --git a/reference/constraints/File.rst b/reference/constraints/File.rst
index 76d6fb9c0ec..58c45bd3cf0 100644
--- a/reference/constraints/File.rst
+++ b/reference/constraints/File.rst
@@ -43,8 +43,8 @@ example, suppose you're creating an author form where you can upload a "bio"
 PDF for the author. In your form, the ``bioFile`` property would be a ``file``
 type. The ``Author`` class might look as follows::
 
-    // src/Acme/BlogBundle/Entity/Author.php
-    namespace Acme\BlogBundle\Entity;
+    // src/AppBundle/Entity/Author.php
+    namespace AppBundle\Entity;
 
     use Symfony\Component\HttpFoundation\File\File;
 
@@ -70,8 +70,8 @@ below a certain file size and a valid PDF, add the following:
 
     .. code-block:: php-annotations
 
-        // src/Acme/BlogBundle/Entity/Author.php
-        namespace Acme\BlogBundle\Entity;
+        // src/AppBundle/Entity/Author.php
+        namespace AppBundle\Entity;
 
         use Symfony\Component\Validator\Constraints as Assert;
 
@@ -89,8 +89,8 @@ below a certain file size and a valid PDF, add the following:
 
     .. code-block:: yaml
 
-        # src/Acme/BlogBundle/Resources/config/validation.yml
-        Acme\BlogBundle\Entity\Author:
+        # src/AppBundle/Resources/config/validation.yml
+        AppBundle\Entity\Author:
             properties:
                 bioFile:
                     - File:
@@ -100,13 +100,13 @@ below a certain file size and a valid PDF, add the following:
 
     .. code-block:: xml
 
-        <!-- src/Acme/BlogBundle/Resources/config/validation.xml -->
+        <!-- src/AppBundle/Resources/config/validation.xml -->
         <?xml version="1.0" encoding="UTF-8" ?>
         <constraint-mapping xmlns="http://symfony.com/schema/dic/constraint-mapping"
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xsi:schemaLocation="http://symfony.com/schema/dic/constraint-mapping http://symfony.com/schema/dic/constraint-mapping/constraint-mapping-1.0.xsd">
 
-            <class name="Acme\BlogBundle\Entity\Author">
+            <class name="AppBundle\Entity\Author">
                 <property name="bioFile">
                     <constraint name="File">
                         <option name="maxSize">1024k</option>
@@ -122,8 +122,8 @@ below a certain file size and a valid PDF, add the following:
 
     .. code-block:: php
 
-        // src/Acme/BlogBundle/Entity/Author.php
-        namespace Acme\BlogBundle\Entity;
+        // src/AppBundle/Entity/Author.php
+        namespace AppBundle\Entity;
 
         use Symfony\Component\Validator\Mapping\ClassMetadata;
         use Symfony\Component\Validator\Constraints as Assert;
diff --git a/reference/constraints/GreaterThan.rst b/reference/constraints/GreaterThan.rst
index d973a262867..a7a167e39af 100644
--- a/reference/constraints/GreaterThan.rst
+++ b/reference/constraints/GreaterThan.rst
@@ -30,8 +30,8 @@ than ``18``, you could do the following:
 
     .. code-block:: php-annotations
 
-        // src/Acme/SocialBundle/Entity/Person.php
-        namespace Acme\SocialBundle\Entity;
+        // src/AppBundle/Entity/Person.php
+        namespace AppBundle\Entity;
 
         use Symfony\Component\Validator\Constraints as Assert;
 
@@ -47,8 +47,8 @@ than ``18``, you could do the following:
 
     .. code-block:: yaml
 
-        # src/Acme/SocialBundle/Resources/config/validation.yml
-        Acme\SocialBundle\Entity\Person:
+        # src/AppBundle/Resources/config/validation.yml
+        AppBundle\Entity\Person:
             properties:
                 age:
                     - GreaterThan:
@@ -56,13 +56,13 @@ than ``18``, you could do the following:
 
     .. code-block:: xml
 
-        <!-- src/Acme/SocialBundle/Resources/config/validation.xml -->
+        <!-- src/AppBundle/Resources/config/validation.xml -->
         <?xml version="1.0" encoding="UTF-8" ?>
         <constraint-mapping xmlns="http://symfony.com/schema/dic/constraint-mapping"
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xsi:schemaLocation="http://symfony.com/schema/dic/constraint-mapping http://symfony.com/schema/dic/constraint-mapping/constraint-mapping-1.0.xsd">
 
-            <class name="Acme\SocialBundle\Entity\Person">
+            <class name="AppBundle\Entity\Person">
                 <property name="age">
                     <constraint name="GreaterThan">
                         <option name="value">18</option>
@@ -73,8 +73,8 @@ than ``18``, you could do the following:
 
     .. code-block:: php
 
-        // src/Acme/SocialBundle/Entity/Person.php
-        namespace Acme\SocialBundle\Entity;
+        // src/AppBundle/Entity/Person.php
+        namespace AppBundle\Entity;
 
         use Symfony\Component\Validator\Mapping\ClassMetadata;
         use Symfony\Component\Validator\Constraints as Assert;
diff --git a/reference/constraints/GreaterThanOrEqual.rst b/reference/constraints/GreaterThanOrEqual.rst
index 50b31db48da..dc6af7535d8 100644
--- a/reference/constraints/GreaterThanOrEqual.rst
+++ b/reference/constraints/GreaterThanOrEqual.rst
@@ -29,8 +29,8 @@ than or equal to ``18``, you could do the following:
 
     .. code-block:: php-annotations
 
-        // src/Acme/SocialBundle/Entity/Person.php
-        namespace Acme\SocialBundle\Entity;
+        // src/AppBundle/Entity/Person.php
+        namespace AppBundle\Entity;
 
         use Symfony\Component\Validator\Constraints as Assert;
 
@@ -46,8 +46,8 @@ than or equal to ``18``, you could do the following:
 
     .. code-block:: yaml
 
-        # src/Acme/SocialBundle/Resources/config/validation.yml
-        Acme\SocialBundle\Entity\Person:
+        # src/AppBundle/Resources/config/validation.yml
+        AppBundle\Entity\Person:
             properties:
                 age:
                     - GreaterThanOrEqual:
@@ -55,13 +55,13 @@ than or equal to ``18``, you could do the following:
 
     .. code-block:: xml
 
-        <!-- src/Acme/SocialBundle/Resources/config/validation.xml -->
+        <!-- src/AppBundle/Resources/config/validation.xml -->
         <?xml version="1.0" encoding="UTF-8" ?>
         <constraint-mapping xmlns="http://symfony.com/schema/dic/constraint-mapping"
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xsi:schemaLocation="http://symfony.com/schema/dic/constraint-mapping http://symfony.com/schema/dic/constraint-mapping/constraint-mapping-1.0.xsd">
 
-            <class name="Acme\SocialBundle\Entity\Person">
+            <class name="AppBundle\Entity\Person">
                 <property name="age">
                     <constraint name="GreaterThanOrEqual">
                         <option name="value">18</option>
@@ -72,8 +72,8 @@ than or equal to ``18``, you could do the following:
 
     .. code-block:: php
 
-        // src/Acme/SocialBundle/Entity/Person.php
-        namespace Acme\SocialBundle\Entity;
+        // src/AppBundle/Entity/Person.php
+        namespace AppBundle\Entity;
 
         use Symfony\Component\Validator\Mapping\ClassMetadata;
         use Symfony\Component\Validator\Constraints as Assert;
diff --git a/reference/constraints/Iban.rst b/reference/constraints/Iban.rst
index e485a0af457..fb577837857 100644
--- a/reference/constraints/Iban.rst
+++ b/reference/constraints/Iban.rst
@@ -29,8 +29,8 @@ will contain an International Bank Account Number.
 
     .. code-block:: php-annotations
 
-        // src/Acme/SubscriptionBundle/Entity/Transaction.php
-        namespace Acme\SubscriptionBundle\Entity;
+        // src/AppBundle/Entity/Transaction.php
+        namespace AppBundle\Entity;
 
         use Symfony\Component\Validator\Constraints as Assert;
 
@@ -46,8 +46,8 @@ will contain an International Bank Account Number.
 
     .. code-block:: yaml
 
-        # src/Acme/SubscriptionBundle/Resources/config/validation.yml
-        Acme\SubscriptionBundle\Entity\Transaction:
+        # src/AppBundle/Resources/config/validation.yml
+        AppBundle\Entity\Transaction:
             properties:
                 bankAccountNumber:
                     - Iban:
@@ -55,13 +55,13 @@ will contain an International Bank Account Number.
 
     .. code-block:: xml
 
-        <!-- src/Acme/SubscriptionBundle/Resources/config/validation.xml -->
+        <!-- src/AppBundle/Resources/config/validation.xml -->
         <?xml version="1.0" encoding="UTF-8" ?>
         <constraint-mapping xmlns="http://symfony.com/schema/dic/constraint-mapping"
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xsi:schemaLocation="http://symfony.com/schema/dic/constraint-mapping http://symfony.com/schema/dic/constraint-mapping/constraint-mapping-1.0.xsd">
 
-            <class name="Acme\SubscriptionBundle\Entity\Transaction">
+            <class name="AppBundle\Entity\Transaction">
                 <property name="bankAccountNumber">
                     <constraint name="Iban">
                         <option name="message">
@@ -74,8 +74,8 @@ will contain an International Bank Account Number.
 
     .. code-block:: php
 
-        // src/Acme/SubscriptionBundle/Entity/Transaction.php
-        namespace Acme\SubscriptionBundle\Entity;
+        // src/AppBundle/Entity/Transaction.php
+        namespace AppBundle\Entity;
 
         use Symfony\Component\Validator\Mapping\ClassMetadata;
         use Symfony\Component\Validator\Constraints as Assert;
diff --git a/reference/constraints/IdenticalTo.rst b/reference/constraints/IdenticalTo.rst
index 0aa32d57200..aead27a3fb3 100644
--- a/reference/constraints/IdenticalTo.rst
+++ b/reference/constraints/IdenticalTo.rst
@@ -35,8 +35,8 @@ If you want to ensure that the ``age`` of a ``Person`` class is equal to
 
     .. code-block:: php-annotations
 
-        // src/Acme/SocialBundle/Entity/Person.php
-        namespace Acme\SocialBundle\Entity;
+        // src/AppBundle/Entity/Person.php
+        namespace AppBundle\Entity;
 
         use Symfony\Component\Validator\Constraints as Assert;
 
@@ -52,8 +52,8 @@ If you want to ensure that the ``age`` of a ``Person`` class is equal to
 
     .. code-block:: yaml
 
-        # src/Acme/SocialBundle/Resources/config/validation.yml
-        Acme\SocialBundle\Entity\Person:
+        # src/AppBundle/Resources/config/validation.yml
+        AppBundle\Entity\Person:
             properties:
                 age:
                     - IdenticalTo:
@@ -61,13 +61,13 @@ If you want to ensure that the ``age`` of a ``Person`` class is equal to
 
     .. code-block:: xml
 
-        <!-- src/Acme/SocialBundle/Resources/config/validation.xml -->
+        <!-- src/AppBundle/Resources/config/validation.xml -->
         <?xml version="1.0" encoding="UTF-8" ?>
         <constraint-mapping xmlns="http://symfony.com/schema/dic/constraint-mapping"
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xsi:schemaLocation="http://symfony.com/schema/dic/constraint-mapping http://symfony.com/schema/dic/constraint-mapping/constraint-mapping-1.0.xsd">
 
-            <class name="Acme\SocialBundle\Entity\Person">
+            <class name="AppBundle\Entity\Person">
                 <property name="age">
                     <constraint name="IdenticalTo">
                         <option name="value">20</option>
@@ -78,8 +78,8 @@ If you want to ensure that the ``age`` of a ``Person`` class is equal to
 
     .. code-block:: php
 
-        // src/Acme/SocialBundle/Entity/Person.php
-        namespace Acme\SocialBundle\Entity;
+        // src/AppBundle/Entity/Person.php
+        namespace AppBundle\Entity;
 
         use Symfony\Component\Validator\Mapping\ClassMetadata;
         use Symfony\Component\Validator\Constraints as Assert;
diff --git a/reference/constraints/Image.rst b/reference/constraints/Image.rst
index 9e62ad5a65e..ceb4ac6c3e1 100644
--- a/reference/constraints/Image.rst
+++ b/reference/constraints/Image.rst
@@ -41,8 +41,8 @@ example, suppose you're creating an author form where you can upload a
 "headshot" image for the author. In your form, the ``headshot`` property
 would be a ``file`` type. The ``Author`` class might look as follows::
 
-    // src/Acme/BlogBundle/Entity/Author.php
-    namespace Acme\BlogBundle\Entity;
+    // src/AppBundle/Entity/Author.php
+    namespace AppBundle\Entity;
 
     use Symfony\Component\HttpFoundation\File\File;
 
@@ -68,8 +68,8 @@ that it is between a certain size, add the following:
 
     .. code-block:: php-annotations
 
-        // src/Acme/BlogBundle/Entity/Author.php
-        namespace Acme\BlogBundle\Entity;
+        // src/AppBundle/Entity/Author.php
+        namespace AppBundle\Entity;
 
         use Symfony\Component\Validator\Constraints as Assert;
 
@@ -88,8 +88,8 @@ that it is between a certain size, add the following:
 
     .. code-block:: yaml
 
-        # src/Acme/BlogBundle/Resources/config/validation.yml
-        Acme\BlogBundle\Entity\Author
+        # src/AppBundle/Resources/config/validation.yml
+        AppBundle\Entity\Author
             properties:
                 headshot:
                     - Image:
@@ -100,13 +100,13 @@ that it is between a certain size, add the following:
 
     .. code-block:: xml
 
-        <!-- src/Acme/BlogBundle/Resources/config/validation.xml -->
+        <!-- src/AppBundle/Resources/config/validation.xml -->
         <?xml version="1.0" encoding="UTF-8" ?>
         <constraint-mapping xmlns="http://symfony.com/schema/dic/constraint-mapping"
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xsi:schemaLocation="http://symfony.com/schema/dic/constraint-mapping http://symfony.com/schema/dic/constraint-mapping/constraint-mapping-1.0.xsd">
 
-            <class name="Acme\BlogBundle\Entity\Author">
+            <class name="AppBundle\Entity\Author">
                 <property name="headshot">
                     <constraint name="Image">
                         <option name="minWidth">200</option>
@@ -120,8 +120,8 @@ that it is between a certain size, add the following:
 
     .. code-block:: php
 
-        // src/Acme/BlogBundle/Entity/Author.php
-        namespace Acme\BlogBundle\Entity;
+        // src/AppBundle/Entity/Author.php
+        namespace AppBundle\Entity;
 
         use Symfony\Component\Validator\Mapping\ClassMetadata;
         use Symfony\Component\Validator\Constraints\Image;
diff --git a/reference/constraints/Ip.rst b/reference/constraints/Ip.rst
index 93f7a87ec3f..85611b75d36 100644
--- a/reference/constraints/Ip.rst
+++ b/reference/constraints/Ip.rst
@@ -23,8 +23,8 @@ Basic Usage
 
     .. code-block:: php-annotations
 
-        // src/Acme/BlogBundle/Entity/Author.php
-        namespace Acme\BlogBundle\Entity;
+        // src/AppBundle/Entity/Author.php
+        namespace AppBundle\Entity;
 
         use Symfony\Component\Validator\Constraints as Assert;
 
@@ -38,21 +38,21 @@ Basic Usage
 
     .. code-block:: yaml
 
-        # src/Acme/BlogBundle/Resources/config/validation.yml
-        Acme\BlogBundle\Entity\Author:
+        # src/AppBundle/Resources/config/validation.yml
+        AppBundle\Entity\Author:
             properties:
                 ipAddress:
                     - Ip: ~
 
     .. code-block:: xml
 
-        <!-- src/Acme/BlogBundle/Resources/config/validation.xml -->
+        <!-- src/AppBundle/Resources/config/validation.xml -->
         <?xml version="1.0" encoding="UTF-8" ?>
         <constraint-mapping xmlns="http://symfony.com/schema/dic/constraint-mapping"
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xsi:schemaLocation="http://symfony.com/schema/dic/constraint-mapping http://symfony.com/schema/dic/constraint-mapping/constraint-mapping-1.0.xsd">
 
-            <class name="Acme\BlogBundle\Entity\Author">
+            <class name="AppBundle\Entity\Author">
                 <property name="ipAddress">
                     <constraint name="Ip" />
                 </property>
@@ -61,8 +61,8 @@ Basic Usage
 
     .. code-block:: php
 
-        // src/Acme/BlogBundle/Entity/Author.php
-        namespace Acme\BlogBundle\Entity;
+        // src/AppBundle/Entity/Author.php
+        namespace AppBundle\Entity;
 
         use Symfony\Component\Validator\Mapping\ClassMetadata;
         use Symfony\Component\Validator\Constraints as Assert;
diff --git a/reference/constraints/Isbn.rst b/reference/constraints/Isbn.rst
index 5afc0f0d092..fb33092f0c5 100644
--- a/reference/constraints/Isbn.rst
+++ b/reference/constraints/Isbn.rst
@@ -31,8 +31,8 @@ on an object that will contain a ISBN number.
 
     .. code-block:: php-annotations
 
-        // src/Acme/BookcaseBundle/Entity/Book.php
-        namespace Acme\BookcaseBundle\Entity;
+        // src/AppBundle/Entity/Book.php
+        namespace AppBundle\Entity;
 
         use Symfony\Component\Validator\Constraints as Assert;
 
@@ -50,8 +50,8 @@ on an object that will contain a ISBN number.
 
     .. code-block:: yaml
 
-        # src/Acme/BookcaseBundle/Resources/config/validation.yml
-        Acme\BookcaseBundle\Entity\Book:
+        # src/AppBundle/Resources/config/validation.yml
+        AppBundle\Entity\Book:
             properties:
                 isbn:
                     - Isbn:
@@ -61,13 +61,13 @@ on an object that will contain a ISBN number.
 
     .. code-block:: xml
 
-        <!-- src/Acme/BookcaseBundle/Resources/config/validation.xml -->
+        <!-- src/AppBundle/Resources/config/validation.xml -->
         <?xml version="1.0" encoding="UTF-8" ?>
         <constraint-mapping xmlns="http://symfony.com/schema/dic/constraint-mapping"
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xsi:schemaLocation="http://symfony.com/schema/dic/constraint-mapping http://symfony.com/schema/dic/constraint-mapping/constraint-mapping-1.0.xsd">
 
-            <class name="Acme\BookcaseBundle\Entity\Book">
+            <class name="AppBundle\Entity\Book">
                 <property name="isbn">
                     <constraint name="Isbn">
                         <option name="isbn10">true</option>
@@ -82,8 +82,8 @@ on an object that will contain a ISBN number.
 
     .. code-block:: php
 
-        // src/Acme/BookcaseBundle/Entity/Book.php
-        namespace Acme\BookcaseBundle\Entity;
+        // src/AppBundle/Entity/Book.php
+        namespace AppBundle\Entity;
 
         use Symfony\Component\Validator\Mapping\ClassMetadata;
         use Symfony\Component\Validator\Constraints as Assert;
diff --git a/reference/constraints/Issn.rst b/reference/constraints/Issn.rst
index 735bddf4e46..51fc2075856 100644
--- a/reference/constraints/Issn.rst
+++ b/reference/constraints/Issn.rst
@@ -26,8 +26,8 @@ Basic Usage
 
     .. code-block:: php-annotations
 
-        // src/Acme/JournalBundle/Entity/Journal.php
-        namespace Acme\JournalBundle\Entity;
+        // src/AppBundle/Entity/Journal.php
+        namespace AppBundle\Entity;
 
         use Symfony\Component\Validator\Constraints as Assert;
 
@@ -41,21 +41,21 @@ Basic Usage
 
     .. code-block:: yaml
 
-        # src/Acme/JournalBundle/Resources/config/validation.yml
-        Acme\JournalBundle\Entity\Journal:
+        # src/AppBundle/Resources/config/validation.yml
+        AppBundle\Entity\Journal:
             properties:
                 issn:
                     - Issn: ~
 
     .. code-block:: xml
 
-        <!-- src/Acme/JournalBundle/Resources/config/validation.xml -->
+        <!-- src/AppBundle/Resources/config/validation.xml -->
         <?xml version="1.0" encoding="UTF-8" ?>
         <constraint-mapping xmlns="http://symfony.com/schema/dic/constraint-mapping"
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xsi:schemaLocation="http://symfony.com/schema/dic/constraint-mapping http://symfony.com/schema/dic/constraint-mapping/constraint-mapping-1.0.xsd">
 
-            <class name="Acme\JournalBundle\Entity\Journal">
+            <class name="AppBundle\Entity\Journal">
                 <property name="issn">
                     <constraint name="Issn" />
                 </property>
@@ -64,8 +64,8 @@ Basic Usage
 
     .. code-block:: php
 
-        // src/Acme/JournalBundle/Entity/Journal.php
-        namespace Acme\JournalBundle\Entity;
+        // src/AppBundle/Entity/Journal.php
+        namespace AppBundle\Entity;
 
         use Symfony\Component\Validator\Mapping\ClassMetadata;
         use Symfony\Component\Validator\Constraints as Assert;
diff --git a/reference/constraints/Language.rst b/reference/constraints/Language.rst
index 688ff9700e9..e112374dfb2 100644
--- a/reference/constraints/Language.rst
+++ b/reference/constraints/Language.rst
@@ -21,8 +21,8 @@ Basic Usage
 
     .. code-block:: php-annotations
 
-        // src/Acme/UserBundle/Entity/User.php
-        namespace Acme\UserBundle\Entity;
+        // src/AppBundle/Entity/User.php
+        namespace AppBundle\Entity;
 
         use Symfony\Component\Validator\Constraints as Assert;
 
@@ -36,21 +36,21 @@ Basic Usage
 
     .. code-block:: yaml
 
-        # src/Acme/UserBundle/Resources/config/validation.yml
-        Acme\UserBundle\Entity\User:
+        # src/AppBundle/Resources/config/validation.yml
+        AppBundle\Entity\User:
             properties:
                 preferredLanguage:
                     - Language: ~
 
     .. code-block:: xml
 
-        <!-- src/Acme/UserBundle/Resources/config/validation.xml -->
+        <!-- src/AppBundle/Resources/config/validation.xml -->
         <?xml version="1.0" encoding="UTF-8" ?>
         <constraint-mapping xmlns="http://symfony.com/schema/dic/constraint-mapping"
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xsi:schemaLocation="http://symfony.com/schema/dic/constraint-mapping http://symfony.com/schema/dic/constraint-mapping/constraint-mapping-1.0.xsd">
 
-            <class name="Acme\UserBundle\Entity\User">
+            <class name="AppBundle\Entity\User">
                 <property name="preferredLanguage">
                     <constraint name="Language" />
                 </property>
@@ -59,8 +59,8 @@ Basic Usage
 
     .. code-block:: php
 
-        // src/Acme/UserBundle/Entity/User.php
-        namespace Acme\UserBundle\Entity;
+        // src/AppBundle/Entity/User.php
+        namespace AppBundle\Entity;
 
         use Symfony\Component\Validator\Mapping\ClassMetadata;
         use Symfony\Component\Validator\Constraints as Assert;
diff --git a/reference/constraints/Length.rst b/reference/constraints/Length.rst
index 455f8c882e1..e32d42e36ef 100644
--- a/reference/constraints/Length.rst
+++ b/reference/constraints/Length.rst
@@ -29,8 +29,8 @@ and "50", you might add the following:
 
     .. code-block:: php-annotations
 
-        // src/Acme/EventBundle/Entity/Participant.php
-        namespace Acme\EventBundle\Entity;
+        // src/AppBundle/Entity/Participant.php
+        namespace AppBundle\Entity;
 
         use Symfony\Component\Validator\Constraints as Assert;
 
@@ -49,8 +49,8 @@ and "50", you might add the following:
 
     .. code-block:: yaml
 
-        # src/Acme/EventBundle/Resources/config/validation.yml
-        Acme\EventBundle\Entity\Participant:
+        # src/AppBundle/Resources/config/validation.yml
+        AppBundle\Entity\Participant:
             properties:
                 firstName:
                     - Length:
@@ -61,13 +61,13 @@ and "50", you might add the following:
 
     .. code-block:: xml
 
-        <!-- src/Acme/EventBundle/Resources/config/validation.xml -->
+        <!-- src/AppBundle/Resources/config/validation.xml -->
         <?xml version="1.0" encoding="UTF-8" ?>
         <constraint-mapping xmlns="http://symfony.com/schema/dic/constraint-mapping"
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xsi:schemaLocation="http://symfony.com/schema/dic/constraint-mapping http://symfony.com/schema/dic/constraint-mapping/constraint-mapping-1.0.xsd">
 
-            <class name="Acme\EventBundle\Entity\Participant">
+            <class name="AppBundle\Entity\Participant">
                 <property name="firstName">
                     <constraint name="Length">
                         <option name="min">2</option>
@@ -85,8 +85,8 @@ and "50", you might add the following:
 
     .. code-block:: php
 
-        // src/Acme/EventBundle/Entity/Participant.php
-        namespace Acme\EventBundle\Entity;
+        // src/AppBundle/Entity/Participant.php
+        namespace AppBundle\Entity;
 
         use Symfony\Component\Validator\Mapping\ClassMetadata;
         use Symfony\Component\Validator\Constraints as Assert;
diff --git a/reference/constraints/LessThan.rst b/reference/constraints/LessThan.rst
index 84dad8a0c8a..2feaa389780 100644
--- a/reference/constraints/LessThan.rst
+++ b/reference/constraints/LessThan.rst
@@ -30,8 +30,8 @@ If you want to ensure that the ``age`` of a ``Person`` class is less than
 
     .. code-block:: php-annotations
 
-        // src/Acme/SocialBundle/Entity/Person.php
-        namespace Acme\SocialBundle\Entity;
+        // src/AppBundle/Entity/Person.php
+        namespace AppBundle\Entity;
 
         use Symfony\Component\Validator\Constraints as Assert;
 
@@ -47,8 +47,8 @@ If you want to ensure that the ``age`` of a ``Person`` class is less than
 
     .. code-block:: yaml
 
-        # src/Acme/SocialBundle/Resources/config/validation.yml
-        Acme\SocialBundle\Entity\Person:
+        # src/AppBundle/Resources/config/validation.yml
+        AppBundle\Entity\Person:
             properties:
                 age:
                     - LessThan:
@@ -56,13 +56,13 @@ If you want to ensure that the ``age`` of a ``Person`` class is less than
 
     .. code-block:: xml
 
-        <!-- src/Acme/SocialBundle/Resources/config/validation.xml -->
+        <!-- src/AppBundle/Resources/config/validation.xml -->
         <?xml version="1.0" encoding="UTF-8" ?>
         <constraint-mapping xmlns="http://symfony.com/schema/dic/constraint-mapping"
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xsi:schemaLocation="http://symfony.com/schema/dic/constraint-mapping http://symfony.com/schema/dic/constraint-mapping/constraint-mapping-1.0.xsd">
 
-            <class name="Acme\SocialBundle\Entity\Person">
+            <class name="AppBundle\Entity\Person">
                 <property name="age">
                     <constraint name="LessThan">
                         <option name="value">80</option>
@@ -73,8 +73,8 @@ If you want to ensure that the ``age`` of a ``Person`` class is less than
 
     .. code-block:: php
 
-        // src/Acme/SocialBundle/Entity/Person.php
-        namespace Acme\SocialBundle\Entity;
+        // src/AppBundle/Entity/Person.php
+        namespace AppBundle\Entity;
 
         use Symfony\Component\Validator\Mapping\ClassMetadata;
         use Symfony\Component\Validator\Constraints as Assert;
diff --git a/reference/constraints/LessThanOrEqual.rst b/reference/constraints/LessThanOrEqual.rst
index 294d77aa0a2..e72686f1d19 100644
--- a/reference/constraints/LessThanOrEqual.rst
+++ b/reference/constraints/LessThanOrEqual.rst
@@ -29,8 +29,8 @@ or equal to ``80``, you could do the following:
 
     .. code-block:: php-annotations
 
-        // src/Acme/SocialBundle/Entity/Person.php
-        namespace Acme\SocialBundle\Entity;
+        // src/AppBundle/Entity/Person.php
+        namespace AppBundle\Entity;
 
         use Symfony\Component\Validator\Constraints as Assert;
 
@@ -46,8 +46,8 @@ or equal to ``80``, you could do the following:
 
     .. code-block:: yaml
 
-        # src/Acme/SocialBundle/Resources/config/validation.yml
-        Acme\SocialBundle\Entity\Person:
+        # src/AppBundle/Resources/config/validation.yml
+        AppBundle\Entity\Person:
             properties:
                 age:
                     - LessThanOrEqual:
@@ -55,13 +55,13 @@ or equal to ``80``, you could do the following:
 
     .. code-block:: xml
 
-        <!-- src/Acme/SocialBundle/Resources/config/validation.xml -->
+        <!-- src/AppBundle/Resources/config/validation.xml -->
         <?xml version="1.0" encoding="UTF-8" ?>
         <constraint-mapping xmlns="http://symfony.com/schema/dic/constraint-mapping"
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xsi:schemaLocation="http://symfony.com/schema/dic/constraint-mapping http://symfony.com/schema/dic/constraint-mapping/constraint-mapping-1.0.xsd">
 
-            <class name="Acme\SocialBundle\Entity\Person">
+            <class name="AppBundle\Entity\Person">
                 <property name="age">
                     <constraint name="LessThanOrEqual">
                         <option name="value">80</option>
@@ -72,8 +72,8 @@ or equal to ``80``, you could do the following:
 
     .. code-block:: php
 
-        // src/Acme/SocialBundle/Entity/Person.php
-        namespace Acme\SocialBundle\Entity;
+        // src/AppBundle/Entity/Person.php
+        namespace AppBundle\Entity;
 
         use Symfony\Component\Validator\Mapping\ClassMetadata;
         use Symfony\Component\Validator\Constraints as Assert;
diff --git a/reference/constraints/Locale.rst b/reference/constraints/Locale.rst
index 65cf3c50192..041366fb9e8 100644
--- a/reference/constraints/Locale.rst
+++ b/reference/constraints/Locale.rst
@@ -25,8 +25,8 @@ Basic Usage
 
     .. code-block:: php-annotations
 
-        // src/Acme/UserBundle/Entity/User.php
-        namespace Acme\UserBundle\Entity;
+        // src/AppBundle/Entity/User.php
+        namespace AppBundle\Entity;
 
         use Symfony\Component\Validator\Constraints as Assert;
 
@@ -40,21 +40,21 @@ Basic Usage
 
     .. code-block:: yaml
 
-        # src/Acme/UserBundle/Resources/config/validation.yml
-        Acme\UserBundle\Entity\User:
+        # src/AppBundle/Resources/config/validation.yml
+        AppBundle\Entity\User:
             properties:
                 locale:
                     - Locale: ~
 
     .. code-block:: xml
 
-        <!-- src/Acme/UserBundle/Resources/config/validation.xml -->
+        <!-- src/AppBundle/Resources/config/validation.xml -->
         <?xml version="1.0" encoding="UTF-8" ?>
         <constraint-mapping xmlns="http://symfony.com/schema/dic/constraint-mapping"
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xsi:schemaLocation="http://symfony.com/schema/dic/constraint-mapping http://symfony.com/schema/dic/constraint-mapping/constraint-mapping-1.0.xsd">
 
-            <class name="Acme\UserBundle\Entity\User">
+            <class name="AppBundle\Entity\User">
                 <property name="locale">
                     <constraint name="Locale" />
                 </property>
@@ -63,8 +63,8 @@ Basic Usage
 
     .. code-block:: php
 
-        // src/Acme/UserBundle/Entity/User.php
-        namespace Acme\UserBundle\Entity;
+        // src/AppBundle/Entity/User.php
+        namespace AppBundle\Entity;
 
         use Symfony\Component\Validator\Mapping\ClassMetadata;
         use Symfony\Component\Validator\Constraints as Assert;
diff --git a/reference/constraints/Luhn.rst b/reference/constraints/Luhn.rst
index 764774cda42..a250126227a 100644
--- a/reference/constraints/Luhn.rst
+++ b/reference/constraints/Luhn.rst
@@ -28,8 +28,8 @@ will contain a credit card number.
 
     .. code-block:: php-annotations
 
-        // src/Acme/SubscriptionBundle/Entity/Transaction.php
-        namespace Acme\SubscriptionBundle\Entity;
+        // src/AppBundle/Entity/Transaction.php
+        namespace AppBundle\Entity;
 
         use Symfony\Component\Validator\Constraints as Assert;
 
@@ -43,8 +43,8 @@ will contain a credit card number.
 
     .. code-block:: yaml
 
-        # src/Acme/SubscriptionBundle/Resources/config/validation.yml
-        Acme\SubscriptionBundle\Entity\Transaction:
+        # src/AppBundle/Resources/config/validation.yml
+        AppBundle\Entity\Transaction:
             properties:
                 cardNumber:
                     - Luhn:
@@ -52,13 +52,13 @@ will contain a credit card number.
 
     .. code-block:: xml
 
-        <!-- src/Acme/SubscriptionBundle/Resources/config/validation.xml -->
+        <!-- src/AppBundle/Resources/config/validation.xml -->
         <?xml version="1.0" encoding="UTF-8" ?>
         <constraint-mapping xmlns="http://symfony.com/schema/dic/constraint-mapping"
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xsi:schemaLocation="http://symfony.com/schema/dic/constraint-mapping http://symfony.com/schema/dic/constraint-mapping/constraint-mapping-1.0.xsd">
 
-            <class name="Acme\SubscriptionBundle\Entity\Transaction">
+            <class name="AppBundle\Entity\Transaction">
                 <property name="cardNumber">
                     <constraint name="Luhn">
                         <option name="message">Please check your credit card number.</option>
@@ -69,8 +69,8 @@ will contain a credit card number.
 
     .. code-block:: php
 
-        // src/Acme/SubscriptionBundle/Entity/Transaction.php
-        namespace Acme\SubscriptionBundle\Entity;
+        // src/AppBundle/Entity/Transaction.php
+        namespace AppBundle\Entity;
 
         use Symfony\Component\Validator\Mapping\ClassMetadata;
         use Symfony\Component\Validator\Constraints as Assert;
diff --git a/reference/constraints/NotBlank.rst b/reference/constraints/NotBlank.rst
index c00e5fb1f6d..7ea54243d4f 100644
--- a/reference/constraints/NotBlank.rst
+++ b/reference/constraints/NotBlank.rst
@@ -26,8 +26,8 @@ class were not blank, you could do the following:
 
     .. code-block:: php-annotations
 
-        // src/Acme/BlogBundle/Entity/Author.php
-        namespace Acme\BlogBundle\Entity;
+        // src/AppBundle/Entity/Author.php
+        namespace AppBundle\Entity;
 
         use Symfony\Component\Validator\Constraints as Assert;
 
@@ -41,21 +41,21 @@ class were not blank, you could do the following:
 
     .. code-block:: yaml
 
-        # src/Acme/BlogBundle/Resources/config/validation.yml
-        Acme\BlogBundle\Entity\Author:
+        # src/AppBundle/Resources/config/validation.yml
+        AppBundle\Entity\Author:
             properties:
                 firstName:
                     - NotBlank: ~
 
     .. code-block:: xml
 
-        <!-- src/Acme/BlogBundle/Resources/config/validation.xml -->
+        <!-- src/AppBundle/Resources/config/validation.xml -->
         <?xml version="1.0" encoding="UTF-8" ?>
         <constraint-mapping xmlns="http://symfony.com/schema/dic/constraint-mapping"
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xsi:schemaLocation="http://symfony.com/schema/dic/constraint-mapping http://symfony.com/schema/dic/constraint-mapping/constraint-mapping-1.0.xsd">
 
-            <class name="Acme\BlogBundle\Entity\Author">
+            <class name="AppBundle\Entity\Author">
                 <property name="firstName">
                     <constraint name="NotBlank" />
                 </property>
@@ -64,8 +64,8 @@ class were not blank, you could do the following:
 
     .. code-block:: php
 
-        // src/Acme/BlogBundle/Entity/Author.php
-        namespace Acme\BlogBundle\Entity;
+        // src/AppBundle/Entity/Author.php
+        namespace AppBundle\Entity;
 
         use Symfony\Component\Validator\Mapping\ClassMetadata;
         use Symfony\Component\Validator\Constraints as Assert;
diff --git a/reference/constraints/NotEqualTo.rst b/reference/constraints/NotEqualTo.rst
index a816514d8c8..1902da92512 100644
--- a/reference/constraints/NotEqualTo.rst
+++ b/reference/constraints/NotEqualTo.rst
@@ -35,8 +35,8 @@ to ``15``, you could do the following:
 
     .. code-block:: php-annotations
 
-        // src/Acme/SocialBundle/Entity/Person.php
-        namespace Acme\SocialBundle\Entity;
+        // src/AppBundle/Entity/Person.php
+        namespace AppBundle\Entity;
 
         use Symfony\Component\Validator\Constraints as Assert;
 
@@ -52,8 +52,8 @@ to ``15``, you could do the following:
 
     .. code-block:: yaml
 
-        # src/Acme/SocialBundle/Resources/config/validation.yml
-        Acme\SocialBundle\Entity\Person:
+        # src/AppBundle/Resources/config/validation.yml
+        AppBundle\Entity\Person:
             properties:
                 age:
                     - NotEqualTo:
@@ -61,13 +61,13 @@ to ``15``, you could do the following:
 
     .. code-block:: xml
 
-        <!-- src/Acme/SocialBundle/Resources/config/validation.xml -->
+        <!-- src/AppBundle/Resources/config/validation.xml -->
         <?xml version="1.0" encoding="UTF-8" ?>
         <constraint-mapping xmlns="http://symfony.com/schema/dic/constraint-mapping"
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xsi:schemaLocation="http://symfony.com/schema/dic/constraint-mapping http://symfony.com/schema/dic/constraint-mapping/constraint-mapping-1.0.xsd">
 
-            <class name="Acme\SocialBundle\Entity\Person">
+            <class name="AppBundle\Entity\Person">
                 <property name="age">
                     <constraint name="NotEqualTo">
                         <option name="value">15</option>
@@ -78,8 +78,8 @@ to ``15``, you could do the following:
 
     .. code-block:: php
 
-        // src/Acme/SocialBundle/Entity/Person.php
-        namespace Acme\SocialBundle\Entity;
+        // src/AppBundle/Entity/Person.php
+        namespace AppBundle\Entity;
 
         use Symfony\Component\Validator\Mapping\ClassMetadata;
         use Symfony\Component\Validator\Constraints as Assert;
diff --git a/reference/constraints/NotIdenticalTo.rst b/reference/constraints/NotIdenticalTo.rst
index 5c59ce38981..018b86dbf6e 100644
--- a/reference/constraints/NotIdenticalTo.rst
+++ b/reference/constraints/NotIdenticalTo.rst
@@ -35,8 +35,8 @@ to ``15`` and *not* an integer, you could do the following:
 
     .. code-block:: php-annotations
 
-        // src/Acme/SocialBundle/Entity/Person.php
-        namespace Acme\SocialBundle\Entity;
+        // src/AppBundle/Entity/Person.php
+        namespace AppBundle\Entity;
 
         use Symfony\Component\Validator\Constraints as Assert;
 
@@ -52,8 +52,8 @@ to ``15`` and *not* an integer, you could do the following:
 
     .. code-block:: yaml
 
-        # src/Acme/SocialBundle/Resources/config/validation.yml
-        Acme\SocialBundle\Entity\Person:
+        # src/AppBundle/Resources/config/validation.yml
+        AppBundle\Entity\Person:
             properties:
                 age:
                     - NotIdenticalTo:
@@ -61,13 +61,13 @@ to ``15`` and *not* an integer, you could do the following:
 
     .. code-block:: xml
 
-        <!-- src/Acme/SocialBundle/Resources/config/validation.xml -->
+        <!-- src/AppBundle/Resources/config/validation.xml -->
         <?xml version="1.0" encoding="UTF-8" ?>
         <constraint-mapping xmlns="http://symfony.com/schema/dic/constraint-mapping"
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xsi:schemaLocation="http://symfony.com/schema/dic/constraint-mapping http://symfony.com/schema/dic/constraint-mapping/constraint-mapping-1.0.xsd">
 
-            <class name="Acme\SocialBundle\Entity\Person">
+            <class name="AppBundle\Entity\Person">
                 <property name="age">
                     <constraint name="NotIdenticalTo">
                         <option name="value">15</option>
@@ -78,8 +78,8 @@ to ``15`` and *not* an integer, you could do the following:
 
     .. code-block:: php
 
-        // src/Acme/SocialBundle/Entity/Person.php
-        namespace Acme\SocialBundle\Entity;
+        // src/AppBundle/Entity/Person.php
+        namespace AppBundle\Entity;
 
         use Symfony\Component\Validator\Mapping\ClassMetadata;
         use Symfony\Component\Validator\Constraints as Assert;
diff --git a/reference/constraints/NotNull.rst b/reference/constraints/NotNull.rst
index 462e7035ab3..b435449f05e 100644
--- a/reference/constraints/NotNull.rst
+++ b/reference/constraints/NotNull.rst
@@ -25,8 +25,8 @@ class were not strictly equal to ``null``, you would:
 
     .. code-block:: php-annotations
 
-        // src/Acme/BlogBundle/Entity/Author.php
-        namespace Acme\BlogBundle\Entity;
+        // src/AppBundle/Entity/Author.php
+        namespace AppBundle\Entity;
 
         use Symfony\Component\Validator\Constraints as Assert;
 
@@ -40,21 +40,21 @@ class were not strictly equal to ``null``, you would:
 
     .. code-block:: yaml
 
-        # src/Acme/BlogBundle/Resources/config/validation.yml
-        Acme\BlogBundle\Entity\Author:
+        # src/AppBundle/Resources/config/validation.yml
+        AppBundle\Entity\Author:
             properties:
                 firstName:
                     - NotNull: ~
 
     .. code-block:: xml
 
-        <!-- src/Acme/BlogBundle/Resources/config/validation.xml -->
+        <!-- src/AppBundle/Resources/config/validation.xml -->
         <?xml version="1.0" encoding="UTF-8" ?>
         <constraint-mapping xmlns="http://symfony.com/schema/dic/constraint-mapping"
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xsi:schemaLocation="http://symfony.com/schema/dic/constraint-mapping http://symfony.com/schema/dic/constraint-mapping/constraint-mapping-1.0.xsd">
 
-            <class name="Acme\BlogBundle\Entity\Author">
+            <class name="AppBundle\Entity\Author">
                 <property name="firstName">
                     <constraint name="NotNull" />
                 </property>
@@ -63,8 +63,8 @@ class were not strictly equal to ``null``, you would:
 
     .. code-block:: php
 
-        // src/Acme/BlogBundle/Entity/Author.php
-        namespace Acme\BlogBundle\Entity;
+        // src/AppBundle/Entity/Author.php
+        namespace AppBundle\Entity;
 
         use Symfony\Component\Validator\Mapping\ClassMetadata;
         use Symfony\Component\Validator\Constraints as Assert;
diff --git a/reference/constraints/Null.rst b/reference/constraints/Null.rst
index 27a7b5861dc..24f069732ce 100644
--- a/reference/constraints/Null.rst
+++ b/reference/constraints/Null.rst
@@ -25,8 +25,8 @@ of an ``Author`` class exactly equal to ``null``, you could do the following:
 
     .. code-block:: php-annotations
 
-        // src/Acme/BlogBundle/Entity/Author.php
-        namespace Acme\BlogBundle\Entity;
+        // src/AppBundle/Entity/Author.php
+        namespace AppBundle\Entity;
 
         use Symfony\Component\Validator\Constraints as Assert;
 
@@ -40,21 +40,21 @@ of an ``Author`` class exactly equal to ``null``, you could do the following:
 
     .. code-block:: yaml
 
-        # src/Acme/BlogBundle/Resources/config/validation.yml
-        Acme\BlogBundle\Entity\Author:
+        # src/AppBundle/Resources/config/validation.yml
+        AppBundle\Entity\Author:
             properties:
                 firstName:
                     - 'Null': ~
 
     .. code-block:: xml
 
-        <!-- src/Acme/BlogBundle/Resources/config/validation.xml -->
+        <!-- src/AppBundle/Resources/config/validation.xml -->
         <?xml version="1.0" encoding="UTF-8" ?>
         <constraint-mapping xmlns="http://symfony.com/schema/dic/constraint-mapping"
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xsi:schemaLocation="http://symfony.com/schema/dic/constraint-mapping http://symfony.com/schema/dic/constraint-mapping/constraint-mapping-1.0.xsd">
 
-            <class name="Acme\BlogBundle\Entity\Author">
+            <class name="AppBundle\Entity\Author">
                 <property name="firstName">
                     <constraint name="Null" />
                 </property>
@@ -63,8 +63,8 @@ of an ``Author`` class exactly equal to ``null``, you could do the following:
 
     .. code-block:: php
 
-        // src/Acme/BlogBundle/Entity/Author.php
-        namespace Acme\BlogBundle\Entity;
+        // src/AppBundle/Entity/Author.php
+        namespace AppBundle\Entity;
 
         use Symfony\Component\Validator\Mapping\ClassMetadata;
         use Symfony\Component\Validator\Constraints as Assert;
diff --git a/reference/constraints/Range.rst b/reference/constraints/Range.rst
index b38f1d1c8f7..ae9599c1217 100644
--- a/reference/constraints/Range.rst
+++ b/reference/constraints/Range.rst
@@ -27,8 +27,8 @@ you might add the following:
 
     .. code-block:: php-annotations
 
-        // src/Acme/EventBundle/Entity/Participant.php
-        namespace Acme\EventBundle\Entity;
+        // src/AppBundle/Entity/Participant.php
+        namespace AppBundle\Entity;
 
         use Symfony\Component\Validator\Constraints as Assert;
 
@@ -47,8 +47,8 @@ you might add the following:
 
     .. code-block:: yaml
 
-        # src/Acme/EventBundle/Resources/config/validation.yml
-        Acme\EventBundle\Entity\Participant:
+        # src/AppBundle/Resources/config/validation.yml
+        AppBundle\Entity\Participant:
             properties:
                 height:
                     - Range:
@@ -59,13 +59,13 @@ you might add the following:
 
     .. code-block:: xml
 
-        <!-- src/Acme/EventBundle/Resources/config/validation.xml -->
+        <!-- src/AppBundle/Resources/config/validation.xml -->
         <?xml version="1.0" encoding="UTF-8" ?>
         <constraint-mapping xmlns="http://symfony.com/schema/dic/constraint-mapping"
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xsi:schemaLocation="http://symfony.com/schema/dic/constraint-mapping http://symfony.com/schema/dic/constraint-mapping/constraint-mapping-1.0.xsd">
 
-            <class name="Acme\EventBundle\Entity\Participant">
+            <class name="AppBundle\Entity\Participant">
                 <property name="height">
                     <constraint name="Range">
                         <option name="min">120</option>
@@ -79,8 +79,8 @@ you might add the following:
 
     .. code-block:: php
 
-        // src/Acme/EventBundle/Entity/Participant.php
-        namespace Acme\EventBundle\Entity;
+        // src/AppBundle/Entity/Participant.php
+        namespace AppBundle\Entity;
 
         use Symfony\Component\Validator\Mapping\ClassMetadata;
         use Symfony\Component\Validator\Constraints as Assert;
diff --git a/reference/constraints/Regex.rst b/reference/constraints/Regex.rst
index 283210435b5..bf6dc91049c 100644
--- a/reference/constraints/Regex.rst
+++ b/reference/constraints/Regex.rst
@@ -28,8 +28,8 @@ more word characters at the beginning of your string:
 
     .. code-block:: php-annotations
 
-        // src/Acme/BlogBundle/Entity/Author.php
-        namespace Acme\BlogBundle\Entity;
+        // src/AppBundle/Entity/Author.php
+        namespace AppBundle\Entity;
 
         use Symfony\Component\Validator\Constraints as Assert;
 
@@ -43,21 +43,21 @@ more word characters at the beginning of your string:
 
     .. code-block:: yaml
 
-        # src/Acme/BlogBundle/Resources/config/validation.yml
-        Acme\BlogBundle\Entity\Author:
+        # src/AppBundle/Resources/config/validation.yml
+        AppBundle\Entity\Author:
             properties:
                 description:
                     - Regex: '/^\w+/'
 
     .. code-block:: xml
 
-        <!-- src/Acme/BlogBundle/Resources/config/validation.xml -->
+        <!-- src/AppBundle/Resources/config/validation.xml -->
         <?xml version="1.0" encoding="UTF-8" ?>
         <constraint-mapping xmlns="http://symfony.com/schema/dic/constraint-mapping"
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xsi:schemaLocation="http://symfony.com/schema/dic/constraint-mapping http://symfony.com/schema/dic/constraint-mapping/constraint-mapping-1.0.xsd">
 
-            <class name="Acme\BlogBundle\Entity\Author">
+            <class name="AppBundle\Entity\Author">
                 <property name="description">
                     <constraint name="Regex">
                         <option name="pattern">/^\w+/</option>
@@ -68,8 +68,8 @@ more word characters at the beginning of your string:
 
     .. code-block:: php
 
-        // src/Acme/BlogBundle/Entity/Author.php
-        namespace Acme\BlogBundle\Entity;
+        // src/AppBundle/Entity/Author.php
+        namespace AppBundle\Entity;
 
         use Symfony\Component\Validator\Mapping\ClassMetadata;
         use Symfony\Component\Validator\Constraints as Assert;
@@ -93,8 +93,8 @@ it a custom message:
 
     .. code-block:: php-annotations
 
-        // src/Acme/BlogBundle/Entity/Author.php
-        namespace Acme\BlogBundle\Entity;
+        // src/AppBundle/Entity/Author.php
+        namespace AppBundle\Entity;
 
         use Symfony\Component\Validator\Constraints as Assert;
 
@@ -112,8 +112,8 @@ it a custom message:
 
     .. code-block:: yaml
 
-        # src/Acme/BlogBundle/Resources/config/validation.yml
-        Acme\BlogBundle\Entity\Author:
+        # src/AppBundle/Resources/config/validation.yml
+        AppBundle\Entity\Author:
             properties:
                 firstName:
                     - Regex:
@@ -123,13 +123,13 @@ it a custom message:
 
     .. code-block:: xml
 
-        <!-- src/Acme/BlogBundle/Resources/config/validation.xml -->
+        <!-- src/AppBundle/Resources/config/validation.xml -->
         <?xml version="1.0" encoding="UTF-8" ?>
         <constraint-mapping xmlns="http://symfony.com/schema/dic/constraint-mapping"
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xsi:schemaLocation="http://symfony.com/schema/dic/constraint-mapping http://symfony.com/schema/dic/constraint-mapping/constraint-mapping-1.0.xsd">
 
-            <class name="Acme\BlogBundle\Entity\Author">
+            <class name="AppBundle\Entity\Author">
                 <property name="firstName">
                     <constraint name="Regex">
                         <option name="pattern">/\d/</option>
@@ -142,8 +142,8 @@ it a custom message:
 
     .. code-block:: php
 
-        // src/Acme/BlogBundle/Entity/Author.php
-        namespace Acme\BlogBundle\Entity;
+        // src/AppBundle/Entity/Author.php
+        namespace AppBundle\Entity;
 
         use Symfony\Component\Validator\Mapping\ClassMetadata;
         use Symfony\Component\Validator\Constraints as Assert;
@@ -197,8 +197,8 @@ need to specify the HTML5 compatible pattern in the ``htmlPattern`` option:
 
     .. code-block:: php-annotations
 
-        // src/Acme/BlogBundle/Entity/Author.php
-        namespace Acme\BlogBundle\Entity;
+        // src/AppBundle/Entity/Author.php
+        namespace AppBundle\Entity;
 
         use Symfony\Component\Validator\Constraints as Assert;
 
@@ -215,8 +215,8 @@ need to specify the HTML5 compatible pattern in the ``htmlPattern`` option:
 
     .. code-block:: yaml
 
-        # src/Acme/BlogBundle/Resources/config/validation.yml
-        Acme\BlogBundle\Entity\Author:
+        # src/AppBundle/Resources/config/validation.yml
+        AppBundle\Entity\Author:
             properties:
                 name:
                     - Regex:
@@ -225,13 +225,13 @@ need to specify the HTML5 compatible pattern in the ``htmlPattern`` option:
 
     .. code-block:: xml
 
-        <!-- src/Acme/BlogBundle/Resources/config/validation.xml -->
+        <!-- src/AppBundle/Resources/config/validation.xml -->
         <?xml version="1.0" encoding="UTF-8" ?>
         <constraint-mapping xmlns="http://symfony.com/schema/dic/constraint-mapping"
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xsi:schemaLocation="http://symfony.com/schema/dic/constraint-mapping http://symfony.com/schema/dic/constraint-mapping/constraint-mapping-1.0.xsd">
 
-            <class name="Acme\BlogBundle\Entity\Author">
+            <class name="AppBundle\Entity\Author">
                 <property name="name">
                     <constraint name="Regex">
                         <option name="pattern">/^[a-z]+$/i</option>
@@ -243,8 +243,8 @@ need to specify the HTML5 compatible pattern in the ``htmlPattern`` option:
 
     .. code-block:: php
 
-        // src/Acme/BlogBundle/Entity/Author.php
-        namespace Acme\BlogBundle\Entity;
+        // src/AppBundle/Entity/Author.php
+        namespace AppBundle\Entity;
 
         use Symfony\Component\Validator\Mapping\ClassMetadata;
         use Symfony\Component\Validator\Constraints as Assert;
diff --git a/reference/constraints/Time.rst b/reference/constraints/Time.rst
index f95125db402..f739dd7cc18 100644
--- a/reference/constraints/Time.rst
+++ b/reference/constraints/Time.rst
@@ -25,8 +25,8 @@ of the day when the event starts:
 
     .. code-block:: php-annotations
 
-        // src/Acme/EventBundle/Entity/Event.php
-        namespace Acme\EventBundle\Entity;
+        // src/AppBundle/Entity/Event.php
+        namespace AppBundle\Entity;
 
         use Symfony\Component\Validator\Constraints as Assert;
 
@@ -40,21 +40,21 @@ of the day when the event starts:
 
     .. code-block:: yaml
 
-        # src/Acme/EventBundle/Resources/config/validation.yml
-        Acme\EventBundle\Entity\Event:
+        # src/AppBundle/Resources/config/validation.yml
+        AppBundle\Entity\Event:
             properties:
                 startsAt:
                     - Time: ~
 
     .. code-block:: xml
 
-        <!-- src/Acme/EventBundle/Resources/config/validation.xml -->
+        <!-- src/AppBundle/Resources/config/validation.xml -->
         <?xml version="1.0" encoding="UTF-8" ?>
         <constraint-mapping xmlns="http://symfony.com/schema/dic/constraint-mapping"
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xsi:schemaLocation="http://symfony.com/schema/dic/constraint-mapping http://symfony.com/schema/dic/constraint-mapping/constraint-mapping-1.0.xsd">
 
-            <class name="Acme\EventBundle\Entity\Event">
+            <class name="AppBundle\Entity\Event">
                 <property name="startsAt">
                     <constraint name="Time" />
                 </property>
@@ -63,8 +63,8 @@ of the day when the event starts:
 
     .. code-block:: php
 
-        // src/Acme/EventBundle/Entity/Event.php
-        namespace Acme\EventBundle\Entity;
+        // src/AppBundle/Entity/Event.php
+        namespace AppBundle\Entity;
 
         use Symfony\Component\Validator\Mapping\ClassMetadata;
         use Symfony\Component\Validator\Constraints as Assert;
diff --git a/reference/constraints/True.rst b/reference/constraints/True.rst
index 585f2d859d7..0797795822e 100644
--- a/reference/constraints/True.rst
+++ b/reference/constraints/True.rst
@@ -25,8 +25,8 @@ on a registration model) or to a "getter" method. It's most powerful in
 the latter case, where you can assert that a method returns a true value.
 For example, suppose you have the following method::
 
-    // src/Acme/BlogBundle/Entity/Author.php
-    namespace Acme\BlogBundle\Entity;
+    // src/AppBundle/Entity/Author.php
+    namespace AppBundle\Entity;
 
     class Author
     {
@@ -44,8 +44,8 @@ Then you can constrain this method with ``True``.
 
     .. code-block:: php-annotations
 
-        // src/Acme/BlogBundle/Entity/Author.php
-        namespace Acme\BlogBundle\Entity;
+        // src/AppBundle/Entity/Author.php
+        namespace AppBundle\Entity;
 
         use Symfony\Component\Validator\Constraints as Assert;
 
@@ -64,8 +64,8 @@ Then you can constrain this method with ``True``.
 
     .. code-block:: yaml
 
-        # src/Acme/BlogBundle/Resources/config/validation.yml
-        Acme\BlogBundle\Entity\Author:
+        # src/AppBundle/Resources/config/validation.yml
+        AppBundle\Entity\Author:
             getters:
                 tokenValid:
                     - 'True':
@@ -79,7 +79,7 @@ Then you can constrain this method with ``True``.
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xsi:schemaLocation="http://symfony.com/schema/dic/constraint-mapping http://symfony.com/schema/dic/constraint-mapping/constraint-mapping-1.0.xsd">
 
-            <class name="Acme\BlogBundle\Entity\Author">
+            <class name="AppBundle\Entity\Author">
                 <getter property="tokenValid">
                     <constraint name="True">
                         <option name="message">The token is invalid.</option>
@@ -90,8 +90,8 @@ Then you can constrain this method with ``True``.
 
     .. code-block:: php
 
-        // src/Acme/BlogBundle/Entity/Author.php
-        namespace Acme\BlogBundle\Entity;
+        // src/AppBundle/Entity/Author.php
+        namespace AppBundle\Entity;
 
         use Symfony\Component\Validator\Mapping\ClassMetadata;
         use Symfony\Component\Validator\Constraints\True;
diff --git a/reference/constraints/Type.rst b/reference/constraints/Type.rst
index 1ce510b1136..abf93fe5b75 100644
--- a/reference/constraints/Type.rst
+++ b/reference/constraints/Type.rst
@@ -23,8 +23,8 @@ Basic Usage
 
     .. code-block:: php-annotations
 
-        // src/Acme/BlogBundle/Entity/Author.php
-        namespace Acme\BlogBundle\Entity;
+        // src/AppBundle/Entity/Author.php
+        namespace AppBundle\Entity;
 
         use Symfony\Component\Validator\Constraints as Assert;
 
@@ -41,8 +41,8 @@ Basic Usage
 
     .. code-block:: yaml
 
-        # src/Acme/BlogBundle/Resources/config/validation.yml
-        Acme\BlogBundle\Entity\Author:
+        # src/AppBundle/Resources/config/validation.yml
+        AppBundle\Entity\Author:
             properties:
                 age:
                     - Type:
@@ -51,13 +51,13 @@ Basic Usage
 
     .. code-block:: xml
 
-        <!-- src/Acme/BlogBundle/Resources/config/validation.xml -->
+        <!-- src/AppBundle/Resources/config/validation.xml -->
         <?xml version="1.0" encoding="UTF-8" ?>
         <constraint-mapping xmlns="http://symfony.com/schema/dic/constraint-mapping"
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xsi:schemaLocation="http://symfony.com/schema/dic/constraint-mapping http://symfony.com/schema/dic/constraint-mapping/constraint-mapping-1.0.xsd">
 
-            <class name="Acme\BlogBundle\Entity\Author">
+            <class name="AppBundle\Entity\Author">
                 <property name="age">
                     <constraint name="Type">
                         <option name="type">integer</option>
@@ -69,8 +69,8 @@ Basic Usage
 
     .. code-block:: php
 
-        // src/Acme/BlogBundle/Entity/Author.php
-        namespace Acme\BlogBundle\Entity;
+        // src/AppBundle/Entity/Author.php
+        namespace AppBundle\Entity;
 
         use Symfony\Component\Validator\Mapping\ClassMetadata;
         use Symfony\Component\Validator\Constraints as Assert;
diff --git a/reference/constraints/UniqueEntity.rst b/reference/constraints/UniqueEntity.rst
index 83e726f0d11..1f73e24ce34 100644
--- a/reference/constraints/UniqueEntity.rst
+++ b/reference/constraints/UniqueEntity.rst
@@ -23,7 +23,7 @@ using an email address that already exists in the system.
 Basic Usage
 -----------
 
-Suppose you have an AcmeUserBundle bundle with a ``User`` entity that has
+Suppose you have an AppBundle bundle with a ``User`` entity that has
 an ``email`` field. You can use the ``UniqueEntity`` constraint to guarantee
 that the ``email`` field remains unique between all of the constraints in
 your user table:
@@ -32,8 +32,8 @@ your user table:
 
     .. code-block:: php-annotations
 
-        // Acme/UserBundle/Entity/Author.php
-        namespace Acme\UserBundle\Entity;
+        // AppBundle/Entity/Author.php
+        namespace AppBundle\Entity;
 
         use Symfony\Component\Validator\Constraints as Assert;
         use Doctrine\ORM\Mapping as ORM;
@@ -60,8 +60,8 @@ your user table:
 
     .. code-block:: yaml
 
-        # src/Acme/UserBundle/Resources/config/validation.yml
-        Acme\UserBundle\Entity\Author:
+        # src/AppBundle/Resources/config/validation.yml
+        AppBundle\Entity\Author:
             constraints:
                 - Symfony\Bridge\Doctrine\Validator\Constraints\UniqueEntity: email
             properties:
@@ -70,13 +70,13 @@ your user table:
 
     .. code-block:: xml
 
-        <!-- src/Acme/AdministrationBundle/Resources/config/validation.xml -->
+        <!-- src/AppBundle/Resources/config/validation.xml -->
         <?xml version="1.0" encoding="UTF-8" ?>
         <constraint-mapping xmlns="http://symfony.com/schema/dic/constraint-mapping"
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xsi:schemaLocation="http://symfony.com/schema/dic/constraint-mapping http://symfony.com/schema/dic/constraint-mapping/constraint-mapping-1.0.xsd">
 
-            <class name="Acme\UserBundle\Entity\Author">
+            <class name="AppBundle\Entity\Author">
                 <constraint name="Symfony\Bridge\Doctrine\Validator\Constraints\UniqueEntity">
                     <option name="fields">email</option>
                 </constraint>
@@ -89,8 +89,8 @@ your user table:
     .. code-block:: php
 
 
-        // Acme/UserBundle/Entity/User.php
-        namespace Acme\UserBundle\Entity;
+        // AppBundle/Entity/User.php
+        namespace AppBundle\Entity;
 
         use Symfony\Component\Validator\Constraints as Assert;
 
@@ -171,8 +171,8 @@ Consider this example:
 
     .. code-block:: php-annotations
 
-        // src/Acme/AdministrationBundle/Entity/Service.php
-        namespace Acme\AdministrationBundle\Entity;
+        // src/AppBundle/Entity/Service.php
+        namespace AppBundle\Entity;
 
         use Doctrine\ORM\Mapping as ORM;
         use Symfony\Bridge\Doctrine\Validator\Constraints\UniqueEntity;
@@ -200,8 +200,8 @@ Consider this example:
 
     .. code-block:: yaml
 
-        # src/Acme/AdministrationBundle/Resources/config/validation.yml
-        Acme\AdministrationBundle\Entity\Service:
+        # src/AppBundle/Resources/config/validation.yml
+        AppBundle\Entity\Service:
             constraints:
                 - Symfony\Bridge\Doctrine\Validator\Constraints\UniqueEntity:
                     fields: [host, port]
@@ -210,13 +210,13 @@ Consider this example:
 
     .. code-block:: xml
 
-        <!-- src/Acme/AdministrationBundle/Resources/config/validation.xml -->
+        <!-- src/AppBundle/Resources/config/validation.xml -->
         <?xml version="1.0" encoding="UTF-8" ?>
         <constraint-mapping xmlns="http://symfony.com/schema/dic/constraint-mapping"
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xsi:schemaLocation="http://symfony.com/schema/dic/constraint-mapping http://symfony.com/schema/dic/constraint-mapping/constraint-mapping-1.0.xsd">
 
-            <class name="Acme\AdministrationBundle\Entity\Service">
+            <class name="AppBundle\Entity\Service">
                 <constraint name="Symfony\Bridge\Doctrine\Validator\Constraints\UniqueEntity">
                     <option name="fields">
                         <value>host</value>
@@ -231,8 +231,8 @@ Consider this example:
 
     .. code-block:: php
 
-        // src/Acme/AdministrationBundle/Entity/Service.php
-        namespace Acme\AdministrationBundle\Entity;
+        // src/AppBundle/Entity/Service.php
+        namespace AppBundle\Entity;
 
         use Symfony\Component\Validator\Mapping\ClassMetadata;
         use Symfony\Bridge\Doctrine\Validator\Constraints\UniqueEntity;
diff --git a/reference/constraints/Url.rst b/reference/constraints/Url.rst
index 2a4cace9c86..37eec21efa3 100644
--- a/reference/constraints/Url.rst
+++ b/reference/constraints/Url.rst
@@ -21,8 +21,8 @@ Basic Usage
 
     .. code-block:: php-annotations
 
-        // src/Acme/BlogBundle/Entity/Author.php
-        namespace Acme\BlogBundle\Entity;
+        // src/AppBundle/Entity/Author.php
+        namespace AppBundle\Entity;
 
         use Symfony\Component\Validator\Constraints as Assert;
 
@@ -36,21 +36,21 @@ Basic Usage
 
     .. code-block:: yaml
 
-        # src/Acme/BlogBundle/Resources/config/validation.yml
-        Acme\BlogBundle\Entity\Author:
+        # src/AppBundle/Resources/config/validation.yml
+        AppBundle\Entity\Author:
             properties:
                 bioUrl:
                     - Url: ~
 
     .. code-block:: xml
 
-        <!-- src/Acme/BlogBundle/Resources/config/validation.xml -->
+        <!-- src/AppBundle/Resources/config/validation.xml -->
         <?xml version="1.0" encoding="UTF-8" ?>
         <constraint-mapping xmlns="http://symfony.com/schema/dic/constraint-mapping"
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xsi:schemaLocation="http://symfony.com/schema/dic/constraint-mapping http://symfony.com/schema/dic/constraint-mapping/constraint-mapping-1.0.xsd">
 
-            <class name="Acme\BlogBundle\Entity\Author">
+            <class name="AppBundle\Entity\Author">
                 <property name="bioUrl">
                     <constraint name="Url" />
                 </property>
@@ -59,8 +59,8 @@ Basic Usage
 
     .. code-block:: php
 
-        // src/Acme/BlogBundle/Entity/Author.php
-        namespace Acme\BlogBundle\Entity;
+        // src/AppBundle/Entity/Author.php
+        namespace AppBundle\Entity;
 
         use Symfony\Component\Validator\Mapping\ClassMetadata;
         use Symfony\Component\Validator\Constraints as Assert;
@@ -87,8 +87,8 @@ This message is shown if the URL is invalid.
 
     .. code-block:: php-annotations
 
-        // src/Acme/BlogBundle/Entity/Author.php
-        namespace Acme\BlogBundle\Entity;
+        // src/AppBundle/Entity/Author.php
+        namespace AppBundle\Entity;
 
         use Symfony\Component\Validator\Constraints as Assert;
 
@@ -104,8 +104,8 @@ This message is shown if the URL is invalid.
 
     .. code-block:: yaml
 
-        # src/Acme/BlogBundle/Resources/config/validation.yml
-        Acme\BlogBundle\Entity\Author:
+        # src/AppBundle/Resources/config/validation.yml
+        AppBundle\Entity\Author:
             properties:
                 bioUrl:
                     - Url:
@@ -113,13 +113,13 @@ This message is shown if the URL is invalid.
 
     .. code-block:: xml
 
-        <!-- src/Acme/BlogBundle/Resources/config/validation.xml -->
+        <!-- src/AppBundle/Resources/config/validation.xml -->
         <?xml version="1.0" encoding="UTF-8" ?>
         <constraint-mapping xmlns="http://symfony.com/schema/dic/constraint-mapping"
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xsi:schemaLocation="http://symfony.com/schema/dic/constraint-mapping http://symfony.com/schema/dic/constraint-mapping/constraint-mapping-1.0.xsd">
 
-            <class name="Acme\BlogBundle\Entity\Author">
+            <class name="AppBundle\Entity\Author">
                 <property name="bioUrl">
                     <constraint name="Url">
                         <option name="message">The url "{{ value }}" is not a valid url.</option>
@@ -130,8 +130,8 @@ This message is shown if the URL is invalid.
 
     .. code-block:: php
 
-        // src/Acme/BlogBundle/Entity/Author.php
-        namespace Acme\BlogBundle\Entity;
+        // src/AppBundle/Entity/Author.php
+        namespace AppBundle\Entity;
 
         use Symfony\Component\Validator\Mapping\ClassMetadata;
         use Symfony\Component\Validator\Constraints as Assert;
@@ -159,8 +159,8 @@ the ``ftp://`` type URLs to be valid, redefine the ``protocols`` array, listing
 
     .. code-block:: php-annotations
 
-        // src/Acme/BlogBundle/Entity/Author.php
-        namespace Acme\BlogBundle\Entity;
+        // src/AppBundle/Entity/Author.php
+        namespace AppBundle\Entity;
 
         use Symfony\Component\Validator\Constraints as Assert;
 
@@ -176,21 +176,21 @@ the ``ftp://`` type URLs to be valid, redefine the ``protocols`` array, listing
 
     .. code-block:: yaml
 
-        # src/Acme/BlogBundle/Resources/config/validation.yml
-        Acme\BlogBundle\Entity\Author:
+        # src/AppBundle/Resources/config/validation.yml
+        AppBundle\Entity\Author:
             properties:
                 bioUrl:
                     - Url: { protocols: [http, https, ftp] }
 
     .. code-block:: xml
 
-        <!-- src/Acme/BlogBundle/Resources/config/validation.xml -->
+        <!-- src/AppBundle/Resources/config/validation.xml -->
         <?xml version="1.0" encoding="UTF-8" ?>
         <constraint-mapping xmlns="http://symfony.com/schema/dic/constraint-mapping"
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xsi:schemaLocation="http://symfony.com/schema/dic/constraint-mapping http://symfony.com/schema/dic/constraint-mapping/constraint-mapping-1.0.xsd">
 
-            <class name="Acme\BlogBundle\Entity\Author">
+            <class name="AppBundle\Entity\Author">
                 <property name="bioUrl">
                     <constraint name="Url">
                         <option name="protocols">
@@ -205,8 +205,8 @@ the ``ftp://`` type URLs to be valid, redefine the ``protocols`` array, listing
 
     .. code-block:: php
 
-        // src/Acme/BlogBundle/Entity/Author.php
-        namespace Acme\BlogBundle\Entity;
+        // src/AppBundle/Entity/Author.php
+        namespace AppBundle\Entity;
 
         use Symfony\Component\Validator\Mapping\ClassMetadata;
         use Symfony\Component\Validator\Constraints as Assert;
diff --git a/reference/constraints/UserPassword.rst b/reference/constraints/UserPassword.rst
index 546b68261db..2a67a64b46d 100644
--- a/reference/constraints/UserPassword.rst
+++ b/reference/constraints/UserPassword.rst
@@ -41,8 +41,8 @@ the user's current password:
 
     .. code-block:: php-annotations
 
-        // src/Acme/UserBundle/Form/Model/ChangePassword.php
-        namespace Acme\UserBundle\Form\Model;
+        // src/AppBundle/Form/Model/ChangePassword.php
+        namespace AppBundle\Form\Model;
 
         use Symfony\Component\Security\Core\Validator\Constraints as SecurityAssert;
 
@@ -58,8 +58,8 @@ the user's current password:
 
     .. code-block:: yaml
 
-        # src/Acme/UserBundle/Resources/config/validation.yml
-        Acme\UserBundle\Form\Model\ChangePassword:
+        # src/AppBundle/Resources/config/validation.yml
+        AppBundle\Form\Model\ChangePassword:
             properties:
                 oldPassword:
                     - Symfony\Component\Security\Core\Validator\Constraints\UserPassword:
@@ -67,13 +67,13 @@ the user's current password:
 
     .. code-block:: xml
 
-        <!-- src/Acme/UserBundle/Resources/config/validation.xml -->
+        <!-- src/AppBundle/Resources/config/validation.xml -->
         <?xml version="1.0" encoding="UTF-8" ?>
         <constraint-mapping xmlns="http://symfony.com/schema/dic/constraint-mapping"
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xsi:schemaLocation="http://symfony.com/schema/dic/constraint-mapping http://symfony.com/schema/dic/constraint-mapping/constraint-mapping-1.0.xsd">
 
-            <class name="Acme\UserBundle\Form\Model\ChangePassword">
+            <class name="AppBundle\Form\Model\ChangePassword">
                 <property name="oldPassword">
                     <constraint
                         name="Symfony\Component\Security\Core\Validator\Constraints\UserPassword"
@@ -86,8 +86,8 @@ the user's current password:
 
     .. code-block:: php
 
-        // src/Acme/UserBundle/Form/Model/ChangePassword.php
-        namespace Acme\UserBundle\Form\Model;
+        // src/AppBundle/Form/Model/ChangePassword.php
+        namespace AppBundle\Form\Model;
 
         use Symfony\Component\Validator\Mapping\ClassMetadata;
         use Symfony\Component\Security\Core\Validator\Constraints as SecurityAssert;
diff --git a/reference/constraints/Valid.rst b/reference/constraints/Valid.rst
index 03a95ca6ff0..aef42b921ce 100644
--- a/reference/constraints/Valid.rst
+++ b/reference/constraints/Valid.rst
@@ -25,8 +25,8 @@ stores an ``Address`` instance in the ``$address`` property.
 
 .. code-block:: php
 
-    // src/Acme/HelloBundle/Entity/Address.php
-    namespace Acme\HelloBundle\Entity;
+    // src/AppBundle/Entity/Address.php
+    namespace AppBundle\Entity;
 
     class Address
     {
@@ -36,8 +36,8 @@ stores an ``Address`` instance in the ``$address`` property.
 
 .. code-block:: php
 
-    // src/Acme/HelloBundle/Entity/Author.php
-    namespace Acme\HelloBundle\Entity;
+    // src/AppBundle/Entity/Author.php
+    namespace AppBundle\Entity;
 
     class Author
     {
@@ -50,8 +50,8 @@ stores an ``Address`` instance in the ``$address`` property.
 
     .. code-block:: php-annotations
 
-        // src/Acme/HelloBundle/Entity/Address.php
-        namespace Acme\HelloBundle\Entity;
+        // src/AppBundle/Entity/Address.php
+        namespace AppBundle\Entity;
 
         use Symfony\Component\Validator\Constraints as Assert;
 
@@ -69,8 +69,8 @@ stores an ``Address`` instance in the ``$address`` property.
             protected $zipCode;
         }
 
-        // src/Acme/HelloBundle/Entity/Author.php
-        namespace Acme\HelloBundle\Entity;
+        // src/AppBundle/Entity/Author.php
+        namespace AppBundle\Entity;
 
         use Symfony\Component\Validator\Constraints as Assert;
 
@@ -92,8 +92,8 @@ stores an ``Address`` instance in the ``$address`` property.
 
     .. code-block:: yaml
 
-        # src/Acme/HelloBundle/Resources/config/validation.yml
-        Acme\HelloBundle\Entity\Address:
+        # src/AppBundle/Resources/config/validation.yml
+        AppBundle\Entity\Address:
             properties:
                 street:
                     - NotBlank: ~
@@ -102,7 +102,7 @@ stores an ``Address`` instance in the ``$address`` property.
                     - Length:
                         max: 5
 
-        Acme\HelloBundle\Entity\Author:
+        AppBundle\Entity\Author:
             properties:
                 firstName:
                     - NotBlank: ~
@@ -113,13 +113,13 @@ stores an ``Address`` instance in the ``$address`` property.
 
     .. code-block:: xml
 
-        <!-- src/Acme/HelloBundle/Resources/config/validation.xml -->
+        <!-- src/AppBundle/Resources/config/validation.xml -->
         <?xml version="1.0" encoding="UTF-8" ?>
         <constraint-mapping xmlns="http://symfony.com/schema/dic/constraint-mapping"
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xsi:schemaLocation="http://symfony.com/schema/dic/constraint-mapping http://symfony.com/schema/dic/constraint-mapping/constraint-mapping-1.0.xsd">
 
-            <class name="Acme\HelloBundle\Entity\Address">
+            <class name="AppBundle\Entity\Address">
                 <property name="street">
                     <constraint name="NotBlank" />
                 </property>
@@ -131,7 +131,7 @@ stores an ``Address`` instance in the ``$address`` property.
                 </property>
             </class>
 
-            <class name="Acme\HelloBundle\Entity\Author">
+            <class name="AppBundle\Entity\Author">
                 <property name="firstName">
                     <constraint name="NotBlank" />
                     <constraint name="Length">
@@ -146,8 +146,8 @@ stores an ``Address`` instance in the ``$address`` property.
 
     .. code-block:: php
 
-        // src/Acme/HelloBundle/Entity/Address.php
-        namespace Acme\HelloBundle\Entity;
+        // src/AppBundle/Entity/Address.php
+        namespace AppBundle\Entity;
 
         use Symfony\Component\Validator\Mapping\ClassMetadata;
         use Symfony\Component\Validator\Constraints as Assert;
@@ -165,8 +165,8 @@ stores an ``Address`` instance in the ``$address`` property.
             }
         }
 
-        // src/Acme/HelloBundle/Entity/Author.php
-        namespace Acme\HelloBundle\Entity;
+        // src/AppBundle/Entity/Author.php
+        namespace AppBundle\Entity;
 
         use Symfony\Component\Validator\Mapping\ClassMetadata;
         use Symfony\Component\Validator\Constraints as Assert;
@@ -193,8 +193,8 @@ an invalid address. To prevent that, add the ``Valid`` constraint to the
 
     .. code-block:: php-annotations
 
-        // src/Acme/HelloBundle/Entity/Author.php
-        namespace Acme\HelloBundle\Entity;
+        // src/AppBundle/Entity/Author.php
+        namespace AppBundle\Entity;
 
         use Symfony\Component\Validator\Constraints as Assert;
 
@@ -208,21 +208,21 @@ an invalid address. To prevent that, add the ``Valid`` constraint to the
 
     .. code-block:: yaml
 
-        # src/Acme/HelloBundle/Resources/config/validation.yml
-        Acme\HelloBundle\Entity\Author:
+        # src/AppBundle/Resources/config/validation.yml
+        AppBundle\Entity\Author:
             properties:
                 address:
                     - Valid: ~
 
     .. code-block:: xml
 
-        <!-- src/Acme/HelloBundle/Resources/config/validation.xml -->
+        <!-- src/AppBundle/Resources/config/validation.xml -->
         <?xml version="1.0" encoding="UTF-8" ?>
         <constraint-mapping xmlns="http://symfony.com/schema/dic/constraint-mapping"
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xsi:schemaLocation="http://symfony.com/schema/dic/constraint-mapping http://symfony.com/schema/dic/constraint-mapping/constraint-mapping-1.0.xsd">
 
-            <class name="Acme\HelloBundle\Entity\Author">
+            <class name="AppBundle\Entity\Author">
                 <property name="address">
                     <constraint name="Valid" />
                 </property>
@@ -231,8 +231,8 @@ an invalid address. To prevent that, add the ``Valid`` constraint to the
 
     .. code-block:: php
 
-        // src/Acme/HelloBundle/Entity/Author.php
-        namespace Acme\HelloBundle\Entity;
+        // src/AppBundle/Entity/Author.php
+        namespace AppBundle\Entity;
 
         use Symfony\Component\Validator\Mapping\ClassMetadata;
         use Symfony\Component\Validator\Constraints as Assert;
@@ -252,7 +252,7 @@ the validation of the ``Address`` fields failed.
 
 .. code-block:: text
 
-    Acme\\HelloBundle\\Author.address.zipCode:
+    AppBundle\\Author.address.zipCode:
         This value is too long. It should have 5 characters or less.
 
 Options