protected function getContent()
    {
        $content = $this->session->has($this->instance)
            ? $this->session->get($this->instance)
            : new Collection;

        return $content;
    }
protected function getContent()
    {
        $content = $this->session->has($this->instance)
            ? $this->session->get($this->instance)
            : new Collection;

        return $content;
    }
protected function getContent ( ) { $ content = $ this -> session -> has ( $ this -> instance ) ? $ this -> session -> get ( $ this -> instance ) : new Collection ; return $ content ; }
Get the carts content, if there is no cart content set yet, return a new empty Collection

@return \Illuminate\Support\Collection
Get the carts content if there is no cart content set yet return a new empty Collection