public function item($item, $transformer, $parameters = [], Closure $after = null)
    {
        $class = get_class($item);

        if ($parameters instanceof \Closure) {
            $after = $parameters;
            $parameters = [];
        }

        $binding = $this->transformer->register($class, $transformer, $parameters, $after);

        return new Response($item, 200, [], $binding);
    }