code: public static String emptyIfNotPresent(Config config, String path) {
      return getString(config, path, StringUtils.EMPTY);
    }
docs: Return string value at <code>path</code> if <code>config</code> has path. If not return an empty string
  
  @param config in which the path may be present
  @param path key to look for in the config object
  @return string value at <code>path</code> if <code>config</code> has path. If not return an empty string