docs: protected String createConfigFileIfNeeded(String serverDir, String[] commandLine, String xmlSnippet) {
          String utilityName = this.scriptName;
          String taskName = this.getTaskName();
  
          final String MAGICAL_SENTINEL = "@!$#%$#%32543265k425k4/3nj5k43n?m2|5k4\\n5k2345";
  
          /*
           * getArgumentValue() can return 3 possible values.
           * null - The ARG_OPT_CREATE_CONFIG_FILE option was provided, but no value was associated with it.
           * MAGICAL_SENTINEL - The ARG_OPT_CREATE_CONFIG_FILE option was not in the command-line at all.
           * ??? - The value associated with ARG_OPT_CREATE_CONFIG_FILE is ???.
           */
          String targetFilepath = getArgumentValue(ARG_CREATE_CONFIG_FILE, commandLine, MAGICAL_SENTINEL);
  
          if (targetFilepath == MAGICAL_SENTINEL) {
              // the config file is not needed
              return xmlSnippet;
          }
  
          // note that generateConfigFileName() will handle the case where targetFilepath == null
          File outputFile = generateConfigFileName(utilityName, taskName, serverDir, targetFilepath);
  
          String xmlTemplate = "<?xml version=\"1.0\" encoding=\"UTF-8\" ?>" + NL +
                               "<server description=\"This file was generated by the ''{0} {1}'' command on {2,date,yyyy-MM-dd HH:mm:ss z}.\">" + NL +
                               "{3}" + NL +
                               "</server>" + NL;
  
          String xmlData = MessageFormat.format(xmlTemplate, utilityName, taskName, Calendar.getInstance().getTime(), xmlSnippet);
  
          fileUtility.createParentDirectory(stdout, outputFile);
          fileUtility.writeToFile(stderr, xmlData, outputFile);
  
          String includeSnippet = "    <include location=\"" + outputFile.getAbsolutePath() + "\" />" + NL;
  
          return includeSnippet;
      }