RelationStrategy.php

См. документацию.

<?php
 
namespace Bitrix\Calendar\Relation\Strategy;
 
use Bitrix\Calendar\Core\Event\Event;
use Bitrix\Calendar\Relation\Item\Relation;
use Bitrix\Calendar\Relation\Exception\RelationException;
 
abstract class RelationStrategy
{
    public function __construct(protected int $userId, protected Event $event)
    {}

    abstract public function getRelation(): Relation;
}