@Nullable
  public static LocalQuickFix createReplaceOptionalOfNullableWithOfFix(@NotNull PsiElement anchor) {
    final PsiMethodCallExpression parent = findCallExpression(anchor);
    if (parent == null) return null;
    return new ReplaceOptionalCallFix("of", false);
  }
@Nullable
  public static LocalQuickFix createReplaceOptionalOfNullableWithOfFix(@NotNull PsiElement anchor)