public function toArray($skip_empty = false, $include_original = true)
    {
        // Skip when no media
        if ($skip_empty === true && $this->hasMedia() === false) {
            return null;
        }

        $urls = [];

        foreach ($this->styles as $name => $style) {
            if ($include_original === false
                && $this->config('default_style') === $name
            ) {
                continue;
            }

            $urls[$name] = $this->url($name);
        }

        return $urls;
    }