public function croppedImages($width = null, $height = null, $options = null)
    {
        return array_combine(

            // Keys
            $this->images->map(function ($image) {
                return $image->name ?: 'default';
            })->toArray(),

            // Values
            $this->images->map(function ($image) use ($width, $height, $options) {
                return $image->crop($width, $height, $options)->url;
            })->toArray()
        );
    }