@Override
  protected @Nullable LocalQuickFix buildFix(Object... infos) {
    PsiCallExpression call = (PsiCallExpression)infos[0];
    LanguageLevel level = PsiUtil.getLanguageLevel(call);
    if (!level.isAtLeast(LanguageLevel.JDK_1_7)) return null;
    PsiMethod method = call.resolveMethod();
    return getCharsetOverload(method).createFix(level);
  }
@Override
  protected @Nullable LocalQuickFix buildFix(Object... infos)