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>`

def delete_group_entitlement(self, group_id, rule_option=None, remove_group_membership=None):
        """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>`
        """
        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)