code: def createGroup(self, message, user_ids):
          
          data = self._getSendData(message=self._oldMessage(message))
  
          if len(user_ids) < 2:
              raise FBchatUserError("Error when creating group: Not enough participants")
  
          for i, user_id in enumerate(user_ids + [self._uid]):
              data["specific_to_list[{}]".format(i)] = "fbid:{}".format(user_id)
  
          message_id, thread_id = self._doSendRequest(data, get_thread_id=True)
          if not thread_id:
              raise FBchatException(
                  "Error when creating group: No thread_id could be found"
              )
          return thread_id
docs: Creates a group with the given ids
  
          :param message: The initial message
          :param user_ids: A list of users to create the group with.
          :return: ID of the new group
          :raises: FBchatException if request failed