Manually initializing relationship on doctrine entity

gistfile1.txt

// warning: this approach is error-prone in case if there's a doctrine's lazy-entity proxy! 
// when trying to call getQuestion() method on such non-initialized object, "property not initialized" error will come up

trait ManyToOneOtherEntityRelationshipMappingTrait
{
    protected Question $question;

    #[ORM\Column(type: 'uuid')]
    private Uuid $questionId;

    /** @internal */
    #[ORM\PostLoad]
    public function hydrateQuestion(PostLoadEventArgs $eventArgs): void
    {
        $objectManager = $eventArgs->getObjectManager();

        /** @var ?Question $question */
        $question = $objectManager->find(Question::class, $this->questionId);

        if (null === $question) {
            throw new LogicException(sprintf('Question not found: %s', $this->questionId->toRfc4122()));
        }

        $this->question = $question;
    }

    /** @internal */
    #[ORM\PreFlush]
    public function deHydrateQuestion(): void
    {
        $questionId = $this->question->getId();

        if (isset($this->questionId) && $this->questionId->equals($questionId)) {
            return;
        }

        $this->questionId = $questionId;
    }
}