@Override
  protected LocalQuickFix buildFix(Object... infos) {
    final PsiIfStatement ifStatement = (PsiIfStatement)infos[0];
    final PsiField field = (PsiField)infos[1];
    return IntroduceHolderFix.createFix(field, ifStatement);
  }
@Override
  protected LocalQuickFix buildFix(Object... infos)