protected Logger getSLF4JLogger(LogRecord record) {
        String name = record.getLoggerName();
        if (name == null) {
            name = UNKNOWN_LOGGER_NAME;
        }
        return LoggerFactory.getLogger(name);
    }
Return the Logger instance that will be used for logging.

@param record a LogRecord
@return an SLF4J logger corresponding to the record parameter's logger name
jul-to-slf4j/src/main/java/org/slf4j/bridge/SLF4JBridgeHandler.java