Dont allow unserializing classes with a destructor

Author: jderusse

Lock.php

@@ -50,6 +50,16 @@ public function __construct(Key $key, PersistingStoreInterface $store, float $tt
         $this->logger = new NullLogger();
     }
 
+    public function __sleep()
+    {
+        throw new \BadMethodCallException('Cannot serialize '.__CLASS__);
+    }
+
+    public function __wakeup()
+    {
+        throw new \BadMethodCallException('Cannot unserialize '.__CLASS__);
+    }
+
     /**
      * Automatically releases the underlying lock when the object is destructed.
      */