docs: def getRegisterUserInfo(self, svctype = "Android NDrive App ver", auth = 0):
          """Retrieve information about useridx
  
          :param svctype: Information about the platform you are using right now.
          :param auth: Authentication type
  
          :return: ``True`` when success or ``False`` when failed
          """
          data = {'userid': self.user_id,
                  'svctype': svctype,
                  'auth': auth
                 }
  
          s, metadata = self.GET('getRegisterUserInfo', data)
  
          if s is True:
              self.useridx = metadata['useridx']
              return True, metadata
          else:
              return False, metadata