/**
* Serialize extref to JSON
*
* @param JsonSerializationVisitor $visitor Visitor
* @param ExtReference $extReference Extref
* @param array $type Type
* @param Context $context Context
* @return string|null
*/
public function serializeExtReferenceToJson(JsonSerializationVisitor $visitor, ExtReference $extReference, array $type, Context $context)
{
try {
return $visitor->visitString($this->converter->getUrl($extReference), $type, $context);
} catch (\InvalidArgumentException $e) {
return $visitor->visitNull(null, $type, $context);
}
}
