diff --git a/docs/en/customising_add_search_service.md b/docs/en/customising_add_search_service.md
index 5027733..319f28e 100644
--- a/docs/en/customising_add_search_service.md
+++ b/docs/en/customising_add_search_service.md
@@ -33,7 +33,7 @@ in all these implementations that the array of documents is appropriately sized.
 
 All methods that rely on API calls should throw `IndexingServiceException` on error.
 
-### addDocument(DocumentInterface $item): self
+### addDocument(DocumentInterface $document): self
 
 This method is responsible for adding a single document to the indexes. Keep in mind, the
 `DocumentInterface` object that is passed to this function is self-aware of the indexes
@@ -42,14 +42,14 @@ it is assigned to. Be sure to check each item's `shouldIndex()` method, as well.
 Return value should be the unique ID of the document.
 
 ```php
-public function addDocument(DocumentInterface $item): ?string
+public function addDocument(DocumentInterface $document): ?string
 {
-    if (!$item->shouldIndex()) {
+    if (!$document->shouldIndex()) {
         return null;
     }
     
-    $fields = DocumentBuilder::singleton()->toArray($item);
-    $indexes = IndexConfiguration::singleton()->getIndexesForDocument($item);
+    $fields = DocumentBuilder::singleton()->toArray($document);
+    $indexes = IndexConfiguration::singleton()->getIndexesForDocument($document);
     
     foreach (array_keys($indexes) as $indexName) {
         // your custom API call here
@@ -59,7 +59,7 @@ public function addDocument(DocumentInterface $item): ?string
         );   
     }
     
-    return $item->getIdentifier();
+    return $document->getIdentifier();
 
 }
 ```
@@ -67,11 +67,11 @@ public function addDocument(DocumentInterface $item): ?string
 **Tip**: Consider passing `DocumentBuilder` and `IndexConfiguration` as a constructor 
 arguments to your indexing service.
 
-### addDocuments(array $items): self
+### addDocuments(array $documents): self
 
 Same as `addDocument()`, but accepts an array of `DocumentInterface` objects. It is recommended
 that the `addDocument()` method works as a proxy for `addDocuments()`, e.g. 
-`$this->addDocuments([$item])`.
+`$this->addDocuments([$document])`.
 
 **Tip**: Build a map of index names to documents to minimise calls to your API.
 
@@ -89,27 +89,27 @@ Removes a document from its indexes.
 Return value should be the unique ID of the document.
 
 ```php
-public function removeDocument(DocumentInterface $doc): ?string
+public function removeDocument(DocumentInterface $document): ?string
 {
-    $indexes = IndexConfiguration::singleton()->getIndexesForDocument($doc);
+    $indexes = IndexConfiguration::singleton()->getIndexesForDocument($document);
     
     foreach (array_keys($indexes) as $indexName) {
         // your custom API call here
         $myAPI->removeDocumentFromIndex(
             static::environmentizeIndex($indexName),
-            $item->getIdentifier()
+            $document->getIdentifier()
         );
     }
 
-    return $item->getIdentifier();
+    return $document->getIdentifier();
 }
 ```
 
-### removeDocuments(array $items): array
+### removeDocuments(array $documents): array
 
 Same as `removeDocument()`, but accepts an array of `DocumentInterface` objects. It is recommended
 that the `removeDocument()` method works as a proxy for `removeDocuments()`, e.g. 
-`$this->removeDocuments([$item])`.
+`$this->removeDocuments([$document])`.
 
 Return value should be an array of the Document IDs that were removed
 
diff --git a/src/Interfaces/BatchDocumentInterface.php b/src/Interfaces/BatchDocumentInterface.php
index cca42c9..fc64a5f 100644
--- a/src/Interfaces/BatchDocumentInterface.php
+++ b/src/Interfaces/BatchDocumentInterface.php
@@ -12,9 +12,9 @@ interface BatchDocumentInterface
     public function addDocuments(array $documents): array;
 
     /**
+     * @param DocumentInterface[] $documents
      * @return array Array of IDs of the Documents removed
-     * @param DocumentInterface[] $items
      */
-    public function removeDocuments(array $items): array;
+    public function removeDocuments(array $documents): array;
 
 }
diff --git a/src/Interfaces/IndexingInterface.php b/src/Interfaces/IndexingInterface.php
index 64edf16..403792e 100644
--- a/src/Interfaces/IndexingInterface.php
+++ b/src/Interfaces/IndexingInterface.php
@@ -12,13 +12,13 @@ interface IndexingInterface extends BatchDocumentInterface
      * @return string|null ID of the Document added
      * @throws IndexingServiceException
      */
-    public function addDocument(DocumentInterface $item): ?string;
+    public function addDocument(DocumentInterface $document): ?string;
 
     /**
      * @return string|null ID of the Document removed
      * @throws IndexingServiceException
      */
-    public function removeDocument(DocumentInterface $doc): ?string;
+    public function removeDocument(DocumentInterface $document): ?string;
 
     /**
      * @throws IndexingServiceException
diff --git a/src/Service/DocumentChunkFetcher.php b/src/Service/DocumentChunkFetcher.php
index 419e325..c5f9982 100644
--- a/src/Service/DocumentChunkFetcher.php
+++ b/src/Service/DocumentChunkFetcher.php
@@ -33,12 +33,12 @@ public function chunk(int $chunkSize = 100): iterable
 
         $currentChunk = 0;
 
-        while ($chunk = $this->fetcher->fetch($chunkSize, $chunkSize * $currentChunk)) {
-            foreach ($chunk as $item) {
-                yield $item;
+        while ($chunks = $this->fetcher->fetch($chunkSize, $chunkSize * $currentChunk)) {
+            foreach ($chunks as $chunk) {
+                yield $chunk;
             }
 
-            if (sizeof($chunk) < $chunkSize) {
+            if (sizeof($chunks) < $chunkSize) {
                 break;
             }
 
diff --git a/src/Service/EnterpriseSearch/EnterpriseSearchService.php b/src/Service/EnterpriseSearch/EnterpriseSearchService.php
index 0d20b22..1e737a3 100644
--- a/src/Service/EnterpriseSearch/EnterpriseSearchService.php
+++ b/src/Service/EnterpriseSearch/EnterpriseSearchService.php
@@ -83,9 +83,9 @@ public function getDocumentationURL(): ?string
      * @throws IndexingServiceException
      * @throws NotFoundExceptionInterface
      */
-    public function addDocument(DocumentInterface $item): ?string
+    public function addDocument(DocumentInterface $document): ?string
     {
-        $processedIds = $this->addDocuments([$item]);
+        $processedIds = $this->addDocuments([$document]);
 
         return array_shift($processedIds);
     }
@@ -116,27 +116,27 @@ public function addDocuments(array $documents): array
     }
 
     /**
-     * @param DocumentInterface $doc
+     * @param DocumentInterface $document
      * @throws Exception
      */
-    public function removeDocument(DocumentInterface $doc): ?string
+    public function removeDocument(DocumentInterface $document): ?string
     {
-        $processedIds = $this->removeDocuments([$doc]);
+        $processedIds = $this->removeDocuments([$document]);
 
         return array_shift($processedIds);
     }
 
     /**
-     * @param DocumentInterface[] $items
+     * @param DocumentInterface[] $documents
      * @throws Exception
      */
-    public function removeDocuments(array $items): array
+    public function removeDocuments(array $documents): array
     {
         $documentMap = [];
         $processedIds = [];
 
-        foreach ($items as $item) {
-            if (!$item instanceof DocumentInterface) {
+        foreach ($documents as $document) {
+            if (!$document instanceof DocumentInterface) {
                 throw new InvalidArgumentException(sprintf(
                     '%s not passed an instance of %s',
                     __FUNCTION__,
@@ -144,14 +144,14 @@ public function removeDocuments(array $items): array
                 ));
             }
 
-            $indexes = $this->getConfiguration()->getIndexesForDocument($item);
+            $indexes = $this->getConfiguration()->getIndexesForDocument($document);
 
             foreach (array_keys($indexes) as $indexName) {
                 if (!isset($documentMap[$indexName])) {
                     $documentMap[$indexName] = [];
                 }
 
-                $documentMap[$indexName][] = $item->getIdentifier();
+                $documentMap[$indexName][] = $document->getIdentifier();
             }
         }
 
@@ -590,8 +590,8 @@ private function getContentMapForDocuments(array $documents): array
     {
         $documentMap = [];
 
-        foreach ($documents as $item) {
-            if (!$item instanceof DocumentInterface) {
+        foreach ($documents as $document) {
+            if (!$document instanceof DocumentInterface) {
                 throw new InvalidArgumentException(sprintf(
                     '%s not passed an instance of %s',
                     __FUNCTION__,
@@ -599,12 +599,12 @@ private function getContentMapForDocuments(array $documents): array
                 ));
             }
 
-            if (!$item->shouldIndex()) {
+            if (!$document->shouldIndex()) {
                 continue;
             }
 
             try {
-                $fields = $this->getBuilder()->toArray($item);
+                $fields = $this->getBuilder()->toArray($document);
             } catch (IndexConfigurationException $e) {
                 Injector::inst()->get(LoggerInterface::class)->warning(
                     sprintf('Failed to convert document to array: %s', $e->getMessage())
@@ -613,11 +613,11 @@ private function getContentMapForDocuments(array $documents): array
                 continue;
             }
 
-            $indexes = $this->getConfiguration()->getIndexesForDocument($item);
+            $indexes = $this->getConfiguration()->getIndexesForDocument($document);
 
             if (!$indexes) {
                 Injector::inst()->get(LoggerInterface::class)->warn(
-                    sprintf('No valid indexes found for document %s, skipping...', $item->getIdentifier())
+                    sprintf('No valid indexes found for document %s, skipping...', $document->getIdentifier())
                 );
 
                 continue;
diff --git a/src/Service/Naive/NaiveSearchService.php b/src/Service/Naive/NaiveSearchService.php
index d7d5c6d..0a74507 100644
--- a/src/Service/Naive/NaiveSearchService.php
+++ b/src/Service/Naive/NaiveSearchService.php
@@ -9,7 +9,7 @@
 class NaiveSearchService implements IndexingInterface, BatchDocumentRemovalInterface
 {
 
-    public function addDocument(DocumentInterface $item): ?string
+    public function addDocument(DocumentInterface $document): ?string
     {
         return null;
     }
@@ -19,7 +19,7 @@ public function addDocuments(array $documents): array
         return [];
     }
 
-    public function removeDocuments(array $items): array
+    public function removeDocuments(array $documents): array
     {
         return [];
     }
@@ -59,7 +59,7 @@ public function getDocumentTotal(string $indexName): int
         return 0;
     }
 
-    public function removeDocument(DocumentInterface $doc): ?string
+    public function removeDocument(DocumentInterface $document): ?string
     {
         return null;
     }
diff --git a/src/Service/PageCrawler.php b/src/Service/PageCrawler.php
index c669f2a..475d83b 100644
--- a/src/Service/PageCrawler.php
+++ b/src/Service/PageCrawler.php
@@ -29,16 +29,16 @@ class PageCrawler
      */
     private static string $content_xpath_selector = '//main';
 
-    public function getMainContent(DataObject $item): string
+    public function getMainContent(DataObject $dataObject): string
     {
-        if (!$item->hasMethod('Link')) {
+        if (!$dataObject->hasMethod('Link')) {
             return '';
         }
 
         $page = null;
 
         try {
-            $response = Director::test($item->AbsoluteLink());
+            $response = Director::test($dataObject->AbsoluteLink());
             $page = $response->getBody();
         } catch (Throwable $e) {
             Injector::inst()->create(LoggerInterface::class)->error($e);
diff --git a/tests/DataObject/DataObjectDocumentTest.php b/tests/DataObject/DataObjectDocumentTest.php
index a7ea8a8..9a3fd0b 100644
--- a/tests/DataObject/DataObjectDocumentTest.php
+++ b/tests/DataObject/DataObjectDocumentTest.php
@@ -366,29 +366,29 @@ public function testGetDependentDocuments(): void
 
         $this->assertCount(4, $dependencies);
 
-        $this->assertArrayContainsCallback($dependencies, function (DataObjectDocument $item) {
+        $this->assertArrayContainsCallback($dependencies, function (DataObjectDocument $document) {
             $obj = $this->objFromFixture(DataObjectFake::class, 'one');
 
-            return $item->getSourceClass() === DataObjectFake::class &&
-                $item->getDataObject()->ID === $obj->ID;
+            return $document->getSourceClass() === DataObjectFake::class &&
+                $document->getDataObject()->ID === $obj->ID;
         });
-        $this->assertArrayContainsCallback($dependencies, function (DataObjectDocument $item) {
+        $this->assertArrayContainsCallback($dependencies, function (DataObjectDocument $document) {
             $obj = $this->objFromFixture(DataObjectFake::class, 'two');
 
-            return $item->getSourceClass() === DataObjectFake::class &&
-                $item->getDataObject()->ID === $obj->ID;
+            return $document->getSourceClass() === DataObjectFake::class &&
+                $document->getDataObject()->ID === $obj->ID;
         });
-        $this->assertArrayContainsCallback($dependencies, function (DataObjectDocument $item) {
+        $this->assertArrayContainsCallback($dependencies, function (DataObjectDocument $document) {
             $obj = $this->objFromFixture(DataObjectFake::class, 'three');
 
-            return $item->getSourceClass() === DataObjectFake::class &&
-                $item->getDataObject()->ID === $obj->ID;
+            return $document->getSourceClass() === DataObjectFake::class &&
+                $document->getDataObject()->ID === $obj->ID;
         });
-        $this->assertArrayContainsCallback($dependencies, function (DataObjectDocument $item) {
+        $this->assertArrayContainsCallback($dependencies, function (DataObjectDocument $document) {
             $obj = $this->objFromFixture(ImageFake::class, 'two');
 
-            return $item->getSourceClass() === ImageFake::class &&
-                $item->getDataObject()->ID === $obj->ID;
+            return $document->getSourceClass() === ImageFake::class &&
+                $document->getDataObject()->ID === $obj->ID;
         });
     }
 
diff --git a/tests/Fake/ServiceFake.php b/tests/Fake/ServiceFake.php
index efe5c41..daf436c 100644
--- a/tests/Fake/ServiceFake.php
+++ b/tests/Fake/ServiceFake.php
@@ -16,32 +16,32 @@ class ServiceFake implements IndexingInterface, BatchDocumentRemovalInterface
 
     public int $maxDocSize = 1000;
 
-    public function addDocument(DocumentInterface $item): ?string
+    public function addDocument(DocumentInterface $document): ?string
     {
-        $this->documents[$item->getIdentifier()] = DocumentBuilder::singleton()->toArray($item);
+        $this->documents[$document->getIdentifier()] = DocumentBuilder::singleton()->toArray($document);
 
-        return $item->getIdentifier();
+        return $document->getIdentifier();
     }
 
     public function addDocuments(array $documents): array
     {
         $ids = [];
 
-        foreach ($documents as $item) {
-            $this->addDocument($item);
-            $ids[] = $item->getIdentifier();
+        foreach ($documents as $document) {
+            $this->addDocument($document);
+            $ids[] = $document->getIdentifier();
         }
 
         return $ids;
     }
 
-    public function removeDocuments(array $items): array
+    public function removeDocuments(array $documents): array
     {
         $ids = [];
 
-        foreach ($items as $item) {
-            $this->removeDocument($item);
-            $ids[] = $item->getIdentifier();
+        foreach ($documents as $document) {
+            $this->removeDocument($document);
+            $ids[] = $document->getIdentifier();
         }
 
         return $ids;
@@ -59,11 +59,11 @@ public function removeAllDocuments(string $indexName): int
         return $numDocs;
     }
 
-    public function removeDocument(DocumentInterface $doc): ?string
+    public function removeDocument(DocumentInterface $document): ?string
     {
-        unset($this->documents[$doc->getIdentifier()]);
+        unset($this->documents[$document->getIdentifier()]);
 
-        return $doc->getIdentifier();
+        return $document->getIdentifier();
     }
 
     public function getDocument(string $id): ?DocumentInterface