public async Task <IHttpActionResult> Delete(int id)
        {
            var flag = await memoryService.GetById(id);

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

            try
            {
                if (!await memoryService.DeleteCheckOnEntity(id))
                {
                    await memoryService.Delete(id);
                }
                else
                {
                    throw new Exception("Exist ForeingKeys");
                }
                return(Ok());
            }
            catch (Exception e)
            {
                return(InternalServerError(e));
            }
        }