diff --git a/extension/Extension.php b/extension/Extension.php
index <HASH>..<HASH> 100644
--- a/extension/Extension.php
+++ b/extension/Extension.php
@@ -84,9 +84,10 @@ abstract class Extension extends \yii\base\Component
     /**
      * Search, according to the keywords.
      * @param mixed $keywords
+     * @param mixed $config
      * @return string search result.
      */
-    abstract public function search($keywords);
+    abstract public function search($keywords, $config = []);
 
     /**
      * Get module configuration array.
Update Extension.php

Enable to pass search configuration to search() method.