@Deprecated
    @Override
    public LoggingServiceBuilder requestLogLevelMapper(
            Function<? super RequestOnlyLog, LogLevel> requestLogLevelMapper) {
        return (LoggingServiceBuilder) super.requestLogLevelMapper(requestLogLevelMapper);
    }
Returns a newly-created {@link LoggingService} decorator based on the properties of this builder.
core/src/main/java/com/linecorp/armeria/server/logging/LoggingServiceBuilder.java