docs: void backupConfiguration() throws IOException {
  
          final String configuration = Constants.CONFIGURATION;
  
          final File a = new File(installedImage.getAppClientDir(), configuration);
          final File d = new File(installedImage.getDomainDir(), configuration);
          final File s = new File(installedImage.getStandaloneDir(), configuration);
  
          if (a.exists()) {
              final File ab = new File(configBackup, Constants.APP_CLIENT);
              backupDirectory(a, ab);
          }
          if (d.exists()) {
              final File db = new File(configBackup, Constants.DOMAIN);
              backupDirectory(d, db);
          }
          if (s.exists()) {
              final File sb = new File(configBackup, Constants.STANDALONE);
              backupDirectory(s, sb);
          }
  
      }