public async Task <IHttpActionResult> Add(BuildingCreateModel building)
        {
            if (!ModelState.IsValid)
            {
                return(BadRequest(ModelState));
            }

            Response result = await _buildingsService.Add(building);

            if (result.Ok)
            {
                return(StatusCode(HttpStatusCode.Created));
            }
            else
            {
                return(BadRequest(result.Message));
            }
        }