src/vs/platform/log/common/log.ts/AbstractLoggerService/createLogger
class AbstractLoggerService:	createLogger(resource: URI, options?: ILoggerOptions, logLevel?: LogLevel): ILogger {
		let logger = this.loggerItems.get(resource)?.logger;
		if (!logger) {
			logLevel = options?.always ? LogLevel.Trace : logLevel;
			logger = this.doCreateLogger(resource, logLevel ?? this.logLevel, options);
			this.loggerItems.set(resource, { logger, logLevel });
		}
		return logger;
	}