code: def delete_group_entitlement(self, group_id, rule_option=None, remove_group_membership=None):
          
          route_values = {}
          if group_id is not None:
              route_values['groupId'] = self._serialize.url('group_id', group_id, 'str')
          query_parameters = {}
          if rule_option is not None:
              query_parameters['ruleOption'] = self._serialize.query('rule_option', rule_option, 'str')
          if remove_group_membership is not None:
              query_parameters['removeGroupMembership'] = self._serialize.query('remove_group_membership', remove_group_membership, 'bool')
          response = self._send(http_method='DELETE',
                                location_id='2280bffa-58a2-49da-822e-0764a1bb44f7',
                                version='5.0-preview.1',
                                route_values=route_values,
                                query_parameters=query_parameters)
          return self._deserialize('GroupEntitlementOperationReference', response)
docs: DeleteGroupEntitlement.
          [Preview API] Delete a group entitlement.
          :param str group_id: ID of the group to delete.
          :param str rule_option: RuleOption [ApplyGroupRule/TestApplyGroupRule] - specifies if the rules defined in group entitlement should be deleted and the changes are applied to it’s members (default option) or just be tested
          :param bool remove_group_membership: Optional parameter that specifies whether the group with the given ID should be removed from all other groups
          :rtype: :class:`<GroupEntitlementOperationReference> <azure.devops.v5_0.member_entitlement_management.models.GroupEntitlementOperationReference>`