src/vs/platform/userDataSync/common/userDataSyncServiceIpc.ts/UserDataSyncChannel/disposeManualSyncTask
class UserDataSyncChannel:	private disposeManualSyncTask(manualSyncTask: IManualSyncTask): void {
		manualSyncTask.dispose();
		const key = this.createKey(manualSyncTask.id);
		this.manualSyncTasks.get(key)?.disposables.dispose();
		this.manualSyncTasks.delete(key);
	}