MAGETWO-40863: Stabilization Customer Search

Author: okarpenko

app/code/Magento/Customer/Model/Plugin/Grid/CustomAttribute.php

@@ -41,7 +41,7 @@ public function getCustomAttributesWithOptions()
 
     /**
      * @param AttributeMetadataInterface $attribute
-     * @param $optionId
+     * @param string $optionId
      * @return string
      */
     protected function getAttributeOptionLabelById(AttributeMetadataInterface $attribute, $optionId)