@Override
  protected void appendElement(@NotNull StringBuilder sb, @NotNull PsiElement element, boolean skip) {
    super.appendElement(sb, element, skip);
    PsiFile file = element.getContainingFile();
    if (file instanceof PsiClassOwner) {
      appendPackageName(sb, ((PsiClassOwner)file).getPackageName());
    }
  }
@Override
  protected void appendElement(@NotNull StringBuilder sb, @NotNull PsiElement element, boolean skip)