docs: public void command(String... args)
      {
          try
          {
              setArgs(args);
          }
          catch (CmdArgsException ex)
          {
              ex.printStackTrace();
              Logger logger = Logger.getLogger(CmdArgs.class.getName());
              logger.log(Level.SEVERE, Arrays.toString(args));
              logger.log(Level.SEVERE, ex.getMessage(), ex);
              logger.log(Level.SEVERE, ex.usage());
              System.exit(-1);
          }
      }