src/vs/workbench/api/browser/mainThreadLogService.ts/MainThreadLogService/$log
class MainThreadLogService:	$log(file: UriComponents, level: LogLevel, message: any[]): void {
		const uri = URI.revive(file);
		let logger = this._loggers.get(uri.toString());
		if (!logger) {
			logger = this._instaService.createInstance(FileLogger, basename(file.path), URI.revive(file), this._logService.getLevel());
			this._loggers.set(uri.toString(), logger);
		}
		logger.log(level, message);
	}