public function validate($canSetHdSkin)
    {
        $height = $this->image->getHeight();
        $width = $this->image->getWidth();
        $ratio = $width / 128;

        $validHeight = $height / $ratio === 64;
        $validWidth = $width / $ratio === 128;

        if ($canSetHdSkin) {
            if ($validHeight && $validWidth && $width <= 1024 && $height <= 512) {
                return true;
            } else {
                throw new InvalidImageSizeException();
            }
        } else {
            if ($validHeight && $validWidth) {
                if ($height === 64 && $width === 128) {
                    return true;
                } else {
                    throw new InvalidImageSizeException();
                }
            } else {
                throw new InvalidImageSizeException();
            }
        }
    }