Grafika\Gd\Image::__clone PHP Method

    public function __clone()
    {
        $original = $this->gd;
        $copy = imagecreatetruecolor($this->width, $this->height);
        imagecopy($copy, $original, 0, 0, 0, 0, $this->width, $this->height);
        $this->gd = $copy;
    }