var factoryFactory = (n: number) => () => {
			return Promise.as(n);
		};

		var factory = () => new Promise((c, e, p) => {
			Promise.timeout(0).done(() => {
				p(order++);
				c(true);
			});
		});

	getParent(tree: ITree, element: any): Promise {
		return Promise.as(null);
	}

				.then(all => Promise.join(all
					.filter(filter)
					.map(one => pfs.unlink(path.join(cachePath, one)).then(null, () => null))
				))

		zipfile.once('close', () => Promise.join(promises).done(c, e));

	getChildren(tree: ITree, element: any): Promise {
		const model = this.modelProvider.getModel();
		return Promise.as(model === element ? model.entries : []);
	}

		}, () => request.cancel());