private static boolean isWhiteSpaceWithLineFeed(@Nullable PsiElement element) {
    if (element == null) {
      return false;
    }
    if (element instanceof PsiWhiteSpace) {
      return element.textContains('\n');
    }
    final ASTNode node = element.getNode();
    if (node == null) {
      return false;
    }
    final CharSequence text = node.getChars();
    boolean lineFeedFound = false;
    for (int i = 0; i < text.length(); i++) {
      final char c = text.charAt(i);
      if (!StringUtil.isWhiteSpace(c)) {
        return false;
      }
      lineFeedFound |= c == '\n';
    }
    return lineFeedFound;
  }
private static boolean isWhiteSpaceWithLineFeed(@Nullable PsiElement element)