private static boolean isLineComment(Commenter commenter, PsiComment comment, Document doc) {
    final String lineCommentPrefix = commenter.getLineCommentPrefix();
    if (lineCommentPrefix != null) {
      return comment.getText().startsWith(lineCommentPrefix);
    }
    final TextRange textRange = comment.getTextRange();
    return doc.getLineNumber(textRange.getStartOffset()) == doc.getLineNumber(textRange.getEndOffset());
  }
private static boolean isLineComment(Commenter commenter, PsiComment comment, Document doc)