Improve documentation

src/main/kotlin/net/theevilreaper/dartpoet/code/Writeable.kt

@@ -8,7 +8,7 @@ package net.theevilreaper.dartpoet.code
 fun interface Writeable<T> {
 
     /**
-     * Emits the given [spec] to the [CodeWriter].
+     * Emits the content from the generic [T] object to a [CodeWriter] instance.
      * @param spec the spec to emit
      * @param writer the writer to write the spec to
      */

src/main/kotlin/net/theevilreaper/dartpoet/parameter/ParameterBuilder.kt

@@ -78,6 +78,11 @@ class ParameterBuilder internal constructor(
         this.specData.modifiers += modifier()
     }
 
+    /**
+     * Add a given array of [DartModifier] to the builder instance.
+     * @param modifiers the array to add
+     * @return the given instance from the builder
+     */
     override fun modifiers(vararg modifiers: DartModifier) = apply {
         this.specData.modifiers += modifiers
     }

src/main/kotlin/net/theevilreaper/dartpoet/type/ClassName.kt

@@ -47,6 +47,10 @@ open class ClassName(
     }
 }
 
+/**
+ * Converts a generic [KClass] instance to a [ClassName] instance.
+ * @return the created [ClassName] instance
+ */
 @JvmName("get")
 fun KClass<*>.asClassName(): ClassName {
     val simpleName = this.simpleName!!
@@ -58,15 +62,17 @@ fun KClass<*>.asClassName(): ClassName {
         return ClassName(Void::class.simpleName!!.replaceFirstChar { it.lowercase() })
     }
     return ClassName(simpleName)
-
 }
 
+/**
+ * Converts a generic [Class] instance to a [ClassName] instance.
+ * @return the created [ClassName] instance
+ * @throws IllegalArgumentException if the class is a primitive type, a void type or an array
+ */
 @JvmName("get")
 fun Class<*>.asClassName(): ClassName {
     require(!isPrimitive) { "A primitive type can't be represented over a ClassName!" }
     require(Void.TYPE != this) { "A void type can't be represented over a ClassName!" }
     require(!isArray) { "An array can't be represented over a ClassName!" }
     return ClassName(this.simpleName)
 }
-
-