Fixed missing callable in method signature

framework/db/ActiveQueryInterface.php

@@ -86,7 +86,7 @@ interface ActiveQueryInterface extends QueryInterface
      * Its signature should be `function($query)`, where `$query` is the query to be customized.
      * @return static the relation object itself.
      */
-    public function via($relationName, $callable = null);
+    public function via($relationName, callable $callable = null);
 
     /**
      * Finds the related records for the specified primary record.