@Nullable
  private static GrStatement findAnchorForAssignment(@Nullable final GrCodeBlock block, @NotNull Collection<PsiElement> replaced) {
    if (block == null) return null;
    final List<PsiElement> elements = ContainerUtil.findAll(replaced, element -> PsiTreeUtil.isAncestor(block, element, true));
    if (elements.isEmpty()) return null;
    return (GrStatement)GrIntroduceHandlerBase.findAnchor(elements.toArray(PsiElement.EMPTY_ARRAY), block);
  }
@Nullable
  private static GrStatement findAnchorForAssignment(@Nullable final GrCodeBlock block, @NotNull Collection<PsiElement> replaced)