Sonata\Component\Basket\Basket::clean PHP Method

    public function clean()
    {
        $elementsToRemove = array();
        foreach ($this->getBasketElements() as $basketElement) {
            if ($basketElement->getDelete() || 0 === $basketElement->getQuantity()) {
                $elementsToRemove[] = $basketElement;
            }
        }
        $this->removeElements($elementsToRemove);
    }