public function toArray()
{
$data = array_filter(['width' => $this->getWidth(), 'maximumWidth' => $this->getMaximumWidth(), 'height' => $this->getHeight(), 'maximumHeight' => $this->getMaximumHeight(), 'ratioMode' => $this->getRatioMode(), 'allowUpScaling' => $this->isUpScalingAllowed()], function ($value) {
return $value !== null;
});
ksort($data);
return $data;
}