code: def get_group_entitlement(self, group_id):
          
          route_values = {}
          if group_id is not None:
              route_values['groupId'] = self._serialize.url('group_id', group_id, 'str')
          response = self._send(http_method='GET',
                                location_id='2280bffa-58a2-49da-822e-0764a1bb44f7',
                                version='5.0-preview.1',
                                route_values=route_values)
          return self._deserialize('GroupEntitlement', response)
docs: GetGroupEntitlement.
          [Preview API] Get a group entitlement.
          :param str group_id: ID of the group.
          :rtype: :class:`<GroupEntitlement> <azure.devops.v5_0.member_entitlement_management.models.GroupEntitlement>`