static HighlightInfo.Builder checkClassRestrictedKeyword(@NotNull LanguageLevel level, @NotNull PsiIdentifier identifier) {
    String className = identifier.getText();
    if (isRestrictedIdentifier(className, level)) {
      return HighlightInfo.newHighlightInfo(HighlightInfoType.ERROR)
        .descriptionAndTooltip(JavaErrorBundle.message("restricted.identifier", className))
        .range(identifier)
        ;
    }
    return null;
  }
static HighlightInfo.Builder checkClassRestrictedKeyword(@NotNull LanguageLevel level, @NotNull PsiIdentifier identifier)