public string Import(long id, HttpPostedFileBase[] file)
        {
            var context    = new ContextImplement(files: file);
            var controller = new Implem.Pleasanter.Controllers.ItemsController();
            var json       = controller.Import(context: context, id: id, file: Libraries.Requests.HttpPostedFile.Create(file));

            return(json);
        }
        public string Import(long id, ICollection <IFormFile> file)
        {
            var context    = new ContextImplement(files: file);
            var controller = new Implem.Pleasanter.Controllers.ItemsController();
            var json       = controller.Import(context: context, id: id, file: HttpPostedFile.Create(file));

            return(json);
        }