code: private void doLog(LogRecord lr) {
          lr.setLoggerName(name);
          String ebname = getEffectiveResourceBundleName();
          if (ebname != null && !ebname.equals(SYSTEM_LOGGER_RB_NAME)) {
              lr.setResourceBundleName(ebname);
              lr.setResourceBundle(findResourceBundle(ebname, true));
          }
          log(lr);
      }
docs: resource bundle and then call "void log(LogRecord)".