@Nullable
  private static PsiElement getPrev(PsiElement element) {
    PsiElement prev = PsiUtil.getPreviousNonWhitespaceToken(element);
    if (prev != null && prev.getNode().getElementType() == GroovyTokenTypes.mNLS) {
      prev = PsiUtil.getPreviousNonWhitespaceToken(prev);
    }
    return prev;
  }
@Nullable
  private static PsiElement getPrev(PsiElement element)