public async Task <IHttpActionResult> Edit(DepartmentRequestDTO departmentDTO, int id)//se devuelve un modelo
        {
            try
            {
                if (!ModelState.IsValid)
                {
                    return(BadRequest(ModelState));
                }
                if (departmentDTO.DepartmentID != id)
                {
                    return(BadRequest());
                }

                var flag = await departmentService.GetById(id);

                if (flag == null)
                {
                    return(NotFound());
                }


                var department = _mapper.Map <Department>(departmentDTO);
                department = await departmentService.Update(department);

                return(Ok(department));
            }
            catch (Exception ex)
            {
                return(InternalServerError(ex));
            }
        }
        public async Task <IHttpActionResult> Insert(DepartmentRequestDTO departmentDTO)//se devuelve un modelo
        {
            if (!ModelState.IsValid)
            {
                return(BadRequest(ModelState));
            }

            try
            {
                var department = _mapper.Map <Department>(departmentDTO);
                department = await departmentService.Insert(department);

                return(Ok(department));
            }
            catch (Exception ex)
            {
                return(InternalServerError(ex));
            }
        }