TASK: Add missing return void

Author: dfeyer

Classes/Driver/AbstractQuery.php

@@ -135,6 +135,7 @@ public function moreLikeThis(array $like, array $fields = [], $options = [])
      * @param string $parentPath The parent path to add the sub aggregation to
      * @param string $name The name to identify the resulting aggregation
      * @param array $aggregationConfiguration
+     * @return void
      * @throws Exception\QueryBuildingException
      */
     protected function addSubAggregation($parentPath, $name, $aggregationConfiguration)