private static @Nullable Couple<String> getBlockPrefixSuffixPair(@NotNull PsiElement comment) {
    final Commenter commenter = LanguageCommenters.INSTANCE.forLanguage(comment.getLanguage());
    if (commenter != null) {
      final String prefix = commenter.getBlockCommentPrefix();
      final String suffix = commenter.getBlockCommentSuffix();
      if (prefix != null || suffix != null) {
        return Couple.of(StringUtil.notNullize(prefix), StringUtil.notNullize(suffix));
      }
    }
    return null;
  }
private static @Nullable Couple<String> getBlockPrefixSuffixPair(@NotNull PsiElement comment)