public override void OnActionExecuting(HttpActionContext context)
{
CatalogRepository catalogRepository = new CatalogRepository(new MyRoomDbContext());
bool hasChildrens = catalogRepository.HasCatalogChildrens((int)context.ActionArguments["key"]);
if (!hasChildrens)
throw new HttpResponseException(context.Request.CreateErrorResponse(HttpStatusCode.NotAcceptable, "Please, delete the modules childrens"));
}