src/vs/platform/userDataSync/common/userDataSyncIpc.ts/UserDataSycnUtilServiceChannel/call
class UserDataSycnUtilServiceChannel:	call(context: any, command: string, args?: any): Promise<any> {
		switch (command) {
			case 'resolveDefaultIgnoredSettings': return this.service.resolveDefaultIgnoredSettings();
			case 'resolveUserKeybindings': return this.service.resolveUserBindings(args[0]);
			case 'resolveFormattingOptions': return this.service.resolveFormattingOptions(URI.revive(args[0]));
		}
		throw new Error('Invalid call');
	}