Relation.php

См. документацию.

<?php
 
namespace Bitrix\Calendar\Relation\Item;
 
use Bitrix\Main\Type\Contract\Arrayable;
 
class Relation implements Arrayable
{
    private ?Entity $entity = null;
    private ?Owner $owner = null;
 
    public function __construct(private int $eventId)
    {}
 
    public function getEventId(): int
    {
        return $this->eventId;
    }
 
    public function getEntity(): ?Entity
    {
        return $this->entity;
    }
 
    public function setEntity(Entity $entity): self
    {
        $this->entity = $entity;
 
        return $this;
    }
 
    public function getOwner(): ?Owner
    {
        return $this->owner;
    }
 
    public function setOwner(Owner $owner): self
    {
        $this->owner = $owner;
 
        return $this;
    }
 
    public function toArray(): array
    {
        return [
            'eventId' => $this->eventId,
            'owner' => $this->owner?->toArray(),
            'entity' => $this->entity?->toArray(),
        ];
    }
}