/**
  * @author Adeyemi Olaoye <*****@*****.**>
  * @param MessageInterface $message
  * @return Validation
  */
 public function appendMessage(MessageInterface $message)
 {
     if (!is_null($this->namespace)) {
         $message->setMessage(str_replace($message->getField(), $this->namespace . '.' . $message->getField(), $message->getMessage()));
         $message->setMessage(str_replace(':field', $this->namespace . '.' . $message->getField(), $message->getMessage()));
     }
     return parent::appendMessage($message);
 }