Efficiently\Larasset\Asset::manifest PHP Method

    public function manifest($args = null)
    {
        $args = func_get_args() ? func_get_args() : $this->args;
        $manifestHash = md5(json_encode($args));
        if (array_get($this->manifests, $manifestHash)) {
            return $this->manifests[$manifestHash];
        }
        return $this->manifests[$manifestHash] = App::make('manifest', $args);
    }