@Nullable
  private static PsiElement findClosestParentAfterLineBreak(PsiElement element) {
    PsiElement parent = element;
    while (parent != null && !(parent instanceof PsiFileSystemItem)) {
      PsiElement prev = parent.getPrevSibling();
      while (prev != null && prev.getTextLength() <= 0) {
        prev = prev.getPrevSibling();
      }
      if (firstElementInFile(parent)) {
        return parent.getContainingFile();
      }
      else if (isWhiteSpaceWithLineFeed(prev)) {
        return parent;
      }
      parent = parent.getParent();
    }
    return null;
  }
@Nullable
  private static PsiElement findClosestParentAfterLineBreak(PsiElement element)