/**
* @param string $thumbnail
* @return null
*/
public function setThumbnail($thumbnail)
{
if (!isset($this->loadedFields['thumbnail'])) {
$this->loadProperties();
}
$oldValue = null;
if (array_key_exists('thumbnail', $this->loadedValues)) {
$oldValue = $this->loadedValues['thumbnail'];
}
if ($oldValue === $thumbnail) {
$this->thumbnail = $thumbnail;
return;
}
return parent::setThumbnail($thumbnail);
}
