public static boolean isKeyword(@NotNull String id, @NotNull LanguageLevel level) {
    return KEYWORDS.contains(id) ||
           JavaFeature.ASSERTIONS.isSufficient(level) && ASSERT.equals(id) ||
           JavaFeature.ENUMS.isSufficient(level) && ENUM.equals(id);
  }
public static boolean isKeyword(@NotNull String id, @NotNull LanguageLevel level)