cs fix

Author: nicolas-grekas

Store/MongoDbStore.php

@@ -47,14 +47,14 @@
  */
 class MongoDbStore implements PersistingStoreInterface
 {
+    use ExpiringStoreTrait;
+
     private $collection;
     private $client;
     private $uri;
     private $options;
     private $initialTtl;
 
-    use ExpiringStoreTrait;
-
     /**
      * @param Collection|Client|string $mongo      An instance of a Collection or Client or URI @see https://docs.mongodb.com/manual/reference/connection-string/
      * @param array                    $options    See below