[Config] Improve PHPdoc / IDE autocomplete

src/Symfony/Component/Config/Definition/Builder/ExprBuilder.php

@@ -198,7 +198,7 @@ class ExprBuilder
     /**
      * Returns the related node.
      *
-     * @return NodeDefinition
+     * @return NodeDefinition|ArrayNodeDefinition|VariableNodeDefinition
      *
      * @throws \RuntimeException
      */

src/Symfony/Component/Config/Definition/Builder/MergeBuilder.php

@@ -63,7 +63,7 @@ class MergeBuilder
     /**
      * Returns the related node.
      *
-     * @return NodeDefinition
+     * @return NodeDefinition|ArrayNodeDefinition|VariableNodeDefinition
      */
     public function end()
     {

src/Symfony/Component/Config/Definition/Builder/NodeDefinition.php

@@ -107,7 +107,7 @@ abstract class NodeDefinition implements NodeParentInterface
     /**
      * Returns the parent node.
      *
-     * @return NodeParentInterface|NodeBuilder|NodeDefinition|null The builder of the parent node
+     * @return NodeParentInterface|NodeBuilder|NodeDefinition|ArrayNodeDefinition|VariableNodeDefinition|null The builder of the parent node
      */
     public function end()
     {

src/Symfony/Component/Config/Definition/Builder/ValidationBuilder.php

@@ -36,7 +36,7 @@ class ValidationBuilder
      *
      * @param \Closure $closure
      *
-     * @return ExprBuilder|ValidationBuilder
+     * @return ExprBuilder|$this
      */
     public function rule(\Closure $closure = null)
     {