public static String convertToString(Collection<AdTypeReportFilter> enums) {
    String result = "";

    for (AdTypeReportFilter entity : enums) {
      result += (entity.value() + " ");
    }

    result = result.substring(0, result.length() - 1);

    return result;
  }
  public static Collection<AdTypeReportFilter> convertToList(String enums) {
    String[] values = enums.split(" ");

    Collection<AdTypeReportFilter> result = new ArrayList<AdTypeReportFilter>();

    for (String value : values) {
      result.add(AdTypeReportFilter.fromValue(value));
    }

    return result;
  }