public static void restoreComments(Collection<? extends PsiComment> comments, PsiElement lambda) {
    PsiElement anchor = PsiTreeUtil.getParentOfType(lambda, PsiStatement.class, PsiField.class);
    if (anchor == null) {
      anchor = lambda;
    }
    for (PsiComment comment : comments) {
      anchor.getParent().addBefore(comment, anchor);
    }
  }
public static void restoreComments(Collection<? extends PsiComment> comments, PsiElement lambda)