private static @NonNls String suggestHolderName(PsiField field) {
    String string = field.getType().getDeepComponentType().getPresentableText();
    final int index = string.indexOf('<');
    if (index != -1) {
      string = string.substring(0, index);
    }
    return string + "Holder";
  }
private static @NonNls String suggestHolderName(PsiField field)