code: def list_by_group(self, id_ugroup):
          
  
          if id_ugroup is None:
              raise InvalidParameterError(
                  u'The identifier of Group User is invalid or was not informed.')
  
          url = 'aperms/group/' + str(id_ugroup) + '/'
  
          code, xml = self.submit(None, 'GET', url)
  
          return self.response(code, xml)
docs: Search Administrative Permission by Group User by identifier.
  
          :param id_ugroup: Identifier of the Group User. Integer value and greater than zero.
  
          :return: Dictionary with the following structure:
  
          ::
  
              {'perms': [{'ugrupo': < ugrupo_id >, 'permission':  { 'function' < function >, 'id': < id > },
              'id': < id >, 'escrita': < escrita >,
              'leitura': < leitura >}, ... ] }
  
          :raise InvalidParameterError: Group User is null and invalid.
          :raise UGrupoNotFoundError: Group User not registered.
          :raise DataBaseError: Networkapi failed to access the database.
          :raise XMLError: Networkapi failed to generate the XML response.