code: def send(self, message, thread_id=None, thread_type=ThreadType.USER):
          
          thread_id, thread_type = self._getThread(thread_id, thread_type)
          data = self._getSendData(
              message=message, thread_id=thread_id, thread_type=thread_type
          )
          return self._doSendRequest(data)
docs: Sends a message to a thread
  
          :param message: Message to send
          :param thread_id: User/Group ID to send to. See :ref:`intro_threads`
          :param thread_type: See :ref:`intro_threads`
          :type message: models.Message
          :type thread_type: models.ThreadType
          :return: :ref:`Message ID <intro_message_ids>` of the sent message
          :raises: FBchatException if request failed