extensions/microsoft-authentication/src/node/authServer.ts/LoopbackAuthServer/stop
class LoopbackAuthServer:	public stop(): Promise<void> {
		return new Promise<void>((resolve, reject) => {
			if (!this._server.listening) {
				throw new Error('Server is not started');
			}
			this._server.close((err) => {
				if (err) {
					reject(err);
				} else {
					resolve();
				}
			});
		});
	}