public LogWriterBuilder logger(String loggerName) {
        requireNonNull(loggerName, "loggerName");
        logger = LoggerFactory.getLogger(loggerName);
        return this;
    }
Sets the name of the {@link Logger} to use when logging.
This method is a shortcut for {@code this.logger(LoggerFactory.getLogger(loggerName))}.
core/src/main/java/com/linecorp/armeria/common/logging/LogWriterBuilder.java