code: def fetchUserInfo(self, *user_ids):
          
          threads = self.fetchThreadInfo(*user_ids)
          users = {}
          for id_, thread in threads.items():
              if thread.type == ThreadType.USER:
                  users[id_] = thread
              else:
                  raise FBchatUserError("Thread {} was not a user".format(thread))
  
          return users
docs: Get users' info from IDs, unordered
  
          .. warning::
              Sends two requests, to fetch all available info!
  
          :param user_ids: One or more user ID(s) to query
          :return: :class:`models.User` objects, labeled by their ID
          :rtype: dict
          :raises: FBchatException if request failed