src/vs/workbench/services/userDataSync/electron-sandbox/userDataSyncAccountService.ts/UserDataSyncAccountService/constructor
class UserDataSyncAccountService:	constructor(
		@ISharedProcessService sharedProcessService: ISharedProcessService,
	) {
		super();
		this.channel = sharedProcessService.getChannel('userDataSyncAccount');
		this.channel.call<IUserDataSyncAccount | undefined>('_getInitialData').then(account => {
			this._account = account;
			this._register(this.channel.listen<IUserDataSyncAccount | undefined>('onDidChangeAccount')(account => {
				this._account = account;
				this._onDidChangeAccount.fire(account);
			}));
		});
	}