code: private void cleanLogs() throws Exception {
          File logsDir = new File(serverOutputDir.getAbsolutePath(), "logs");
          if (logsDir.exists()) {
              cleanDir(logsDir);
              log(MessageFormat.format(messages.getString("info.element.cleaned"), "logs"));
          } else {
              log(MessageFormat.format(messages.getString("info.directory.noexist"), logsDir.getAbsolutePath()));
          }
      }
docs: Delete every file/folder in the serverOutputDir/logs dir.
  @throws Exception