@Override
  public PsiComment findExistingDocComment(final PsiComment comment) {
    if (comment instanceof PsiDocComment) {
      final PsiJavaDocumentedElement owner = ((PsiDocComment)comment).getOwner();
      if (owner != null) {
        return owner.getDocComment();
      }
    }
    return null;
  }
@Override
  public PsiComment findExistingDocComment(final PsiComment comment)