private async Task <dynamic> AddChildGroups(dynamic parameters)
        {
            try
            {
                var identityProvider = GetQueryParameter("identityProvider");
                var tenantId         = GetQueryParameter("tenantId");

                GroupIdentifier groupIdentifier = CreateGroupIdentifier(SetIdentityProvider(identityProvider), tenantId, parameters.groupName.ToString());
                var             group           = await _groupService.GetGroup(groupIdentifier);
                await CheckWriteAccess(group);

                var groupPostApiRequests = this.Bind <List <GroupPostApiRequest> >();

                group = await _groupService.AddChildGroups(group, groupPostApiRequests.Select(g =>
                {
                    var g1 = g.ToGroupDomainModel();
                    g1.IdentityProvider = SetIdentityProvider(g1.IdentityProvider);
                    return(g1);
                }));

                return(CreateSuccessfulPostResponse(group.Name, group.ToGroupRoleApiModel(), HttpStatusCode.OK));
            }
            catch (NotFoundException <Group> ex)
            {
                return(CreateFailureResponse(ex.Message, HttpStatusCode.NotFound));
            }
            catch (BadRequestException <Group> ex)
            {
                return(CreateFailureResponse(ex.Message, HttpStatusCode.BadRequest));
            }
            catch (AlreadyExistsException <Group> ex)
            {
                return(CreateFailureResponse(ex.Message, HttpStatusCode.Conflict));
            }
        }