code: public Level tango_to_log4j_level (int level) throws DevFailed
    {
      switch (level) {
        case LOGGING_OFF:
          return Level.OFF;
        case LOGGING_FATAL:
          return Level.FATAL;
        case LOGGING_ERROR:
          return Level.ERROR;
       case LOGGING_WARN:
          return Level.WARN;
        case LOGGING_INFO:
          return Level.INFO;
        case LOGGING_DEBUG:
          return Level.DEBUG;
        default:
          String desc = "Invalid logging level specified (out of range)";
          Except.throw_exception("API_MethodArgument", desc, "Logging::tango_to_log4j_level");
      }
      //- Make compiler happy
      return Level.WARN;
    }
docs: Given to TANGO logging level, converts it to lo4j level