enum DocumentType: string
{
    case RF_ACTUAL   = 'RF_ACTUAL';
    case RF_PREVIOUS = 'RF_PREVIOUS';
}


#[DiscriminatorMap(
    'type',
    [
        DocumentType::RF_ACTUAL->value   => RussianPassportDocument::class,
        DocumentType::RF_PREVIOUS->value => RussianPassportDocument::class,
    ]
)]
abstract class Document
{
    public function __construct(
        public DocumentType $type,
    ) {}
}


final class RussianPassportDocument extends Document
{
    public function __construct(DocumentType $type)
    {
        if (!in_array($type, [DocumentType::RF_ACTUAL, DocumentType::RF_PREVIOUS])) {
            throw new \InvalidArgumentException('Wrong document type');
        }

        parent::__construct($type);
    }
}


dd(
    $serializer->serialize([new RussianPassportDocument(DocumentType::RF_ACTUAL), new RussianPassportDocument(DocumentType::RF_PREVIOUS)], 'json'), // output: [{"type":"RF_ACTUAL"},{"type":"RF_ACTUAL"}]". WTF?! 🥴
    $serializer->deserialize('[{"type":"RF_ACTUAL"},{"type":"RF_PREVIOUS"}]', Document::class . '[]', 'json'), // output: [{"type":"RF_ACTUAL"},{"type":"RF_PREVIOUS"}]. Great work 😍
);