diff --git a/tests/Doctrine/Tests/Models/DirectoryTree/AbstractContentItem.php b/tests/Doctrine/Tests/Models/DirectoryTree/AbstractContentItem.php
index 12b27eed3..d48b6e19c 100644
--- a/tests/Doctrine/Tests/Models/DirectoryTree/AbstractContentItem.php
+++ b/tests/Doctrine/Tests/Models/DirectoryTree/AbstractContentItem.php
@@ -24,6 +24,8 @@ namespace Doctrine\Tests\Models\DirectoryTree;
  */
 abstract class AbstractContentItem
 {
+    const CLASSNAME = __CLASS__;
+
     /**
      * @Id @Column(type="integer") @GeneratedValue
      */
@@ -37,6 +39,13 @@ abstract class AbstractContentItem
     /** @column(type="string") */
     protected $name;
 
+    /**
+     * This field is transient and private on purpose
+     *
+     * @var bool
+     */
+    private $nodeIsLoaded = false;
+
     public function __construct(Directory $parentDir = null)
     {
         $this->parentDirectory = $parentDir;
@@ -61,4 +70,20 @@ abstract class AbstractContentItem
     {
         return $this->parentDirectory;
     }
+
+    /**
+     * @return bool
+     */
+    public function getNodeIsLoaded()
+    {
+        return $this->nodeIsLoaded;
+    }
+
+    /**
+     * @param bool $nodeIsLoaded
+     */
+    public function setNodeIsLoaded($nodeIsLoaded)
+    {
+        $this->nodeIsLoaded = (bool) $nodeIsLoaded;
+    }
 }
diff --git a/tests/Doctrine/Tests/Models/DirectoryTree/File.php b/tests/Doctrine/Tests/Models/DirectoryTree/File.php
index 35132689a..0b8ed0c80 100644
--- a/tests/Doctrine/Tests/Models/DirectoryTree/File.php
+++ b/tests/Doctrine/Tests/Models/DirectoryTree/File.php
@@ -26,6 +26,8 @@ namespace Doctrine\Tests\Models\DirectoryTree;
  */
 class File extends AbstractContentItem
 {
+    const CLASSNAME = __CLASS__;
+
     /** @Column(type="string") */
     protected $extension = "html";