src/vs/platform/userDataSync/common/userDataSyncIpc.ts/UserDataSyncAccountServiceChannel/call
class UserDataSyncAccountServiceChannel:	call(context: any, command: string, args?: any): Promise<any> {
		switch (command) {
			case '_getInitialData': return Promise.resolve(this.service.account);
			case 'updateAccount': return this.service.updateAccount(args);
		}
		throw new Error('Invalid call');
	}