diff --git a/lib/collection/nullcollection.php b/lib/collection/nullcollection.php
index 2e30572..fa2e440 100644
--- a/lib/collection/nullcollection.php
+++ b/lib/collection/nullcollection.php
@@ -60,4 +60,12 @@ class NullCollection extends AEntityCollection
     {
         return parent::pop(); // TODO: Change the autogenerated stub
     }
+
+    /**
+     * @return NullEntity[]
+     */
+    public function all()
+    {
+        return parent::all(); // TODO: Change the autogenerated stub
+    }
 }
\ No newline at end of file