gistfile1.txt

class CellarSession implements \Cartalyst\Cart\Storage\StorageInterface
{

    public function getKey()
    {
        return "cellar";
    }

    public function identify()
    {
        return "main_cart";
    }

    public function get()
    {
        craft()->httpSession->get($this->getSessionKey());
    }

    public function put($value)
    {
        craft()->httpSession->add($this->getSessionKey(), $value);
    }

    public function has()
    {
        craft()->httpSession->contains($this->getSessionKey());
    }

    public function forget()
    {
        craft()->httpSession->remove($this->getSessionKey());
    }

    protected function getSessionKey()
    {
        return "{$this->getKey()}.{$this->identify()}";
    }
}