public function cart(array &$submitted, array $options = array())
    {
        $this->options = $options;
        $this->submitted = &$submitted;

        $this->validateCart();
        $this->validateStoreId();
        $this->validateProductCart();
        $this->validateSkuCart();
        $this->validateUserCartId();
        $this->validateOrderCart();
        $this->validateQuantityCart();
        $this->validateOptionsCart();
        $this->validateLimitCart();
        $this->validateData();

        $this->unsetSubmitted('update');

        return $this->getResult();
    }