src/vs/workbench/api/browser/mainThreadQuickOpen.ts/MainThreadQuickOpen/$dispose
class MainThreadQuickOpen:	$dispose(sessionId: number): Promise<void> {
		const session = this.sessions.get(sessionId);
		if (session) {
			session.input.dispose();
			this.sessions.delete(sessionId);
		}
		return Promise.resolve(undefined);
	}