original_string: public function messageId($message = null)
      {
          deprecationWarning('Email::messageId() is deprecated. Use Email::setMessageId() or Email::getMessageId() instead.');
  
          if ($message === null) {
              return $this->getMessageId();
          }
  
          return $this->setMessageId($message);
      }
code: public function messageId($message = null)
      {
          deprecationWarning('Email::messageId() is deprecated. Use Email::setMessageId() or Email::getMessageId() instead.');
  
          if ($message === null) {
              return $this->getMessageId();
          }
  
          return $this->setMessageId($message);
      }
code_tokens: public function messageId ( $ message = null ) { deprecationWarning ( 'Email::messageId() is deprecated. Use Email::setMessageId() or Email::getMessageId() instead.' ) ; if ( $ message === null ) { return $ this -> getMessageId ( ) ; } return $ this -> setMessageId ( $ message ) ; }
docstring: Message-ID
  
  @deprecated 3.4.0 Use setMessageId()/getMessageId() instead.
  @param bool|string|null $message True to generate a new Message-ID, False to ignore (not send in email), String to set as Message-ID
  @return bool|string|$this
  @throws \InvalidArgumentException
docstring_tokens: Message - ID