public function upscale($noise = 'none', $style = 'photo', $upscale = true)
    {
        $options = [
            'n' => $noise,
            's' => $style,
            'u' => $upscale ? 'true' : 'false'
        ];

        // call TransformationMixin function
        $this->setTransformUrl('upscale', $options);

        return $this;
    }