declare type for arguments of anonymous functions for v2.7

Author: DQNEO

Mapping/Factory/LazyLoadingMetadataFactory.php

@@ -124,7 +124,7 @@ private function mergeConstraints(ClassMetadata $metadata)
 
         $interfaces = $metadata->getReflectionClass()->getInterfaces();
 
-        $interfaces = array_filter($interfaces, function ($interface) use ($parent, $interfaces) {
+        $interfaces = array_filter($interfaces, function (\ReflectionClass $interface) use ($parent, $interfaces) {
             $interfaceName = $interface->getName();
 
             if ($parent && $parent->implementsInterface($interfaceName)) {