static boolean isNegated(final PsiInstanceOfExpression instanceOfExpression) {
    PsiElement element = instanceOfExpression.getParent();
    while (element instanceof PsiParenthesizedExpression) {
      element = element.getParent();
    }
    return element instanceof PsiPrefixExpression && ((PsiPrefixExpression)element).getOperationTokenType() == JavaTokenType.EXCL;
  }
static boolean isNegated(final PsiInstanceOfExpression instanceOfExpression)