RepositoryInterface.php

См. документацию.

<?php
 
declare(strict_types=1);
 
namespace Bitrix\Main\Repository;
 
use Bitrix\Main\Entity\EntityInterface;
use Bitrix\Main\Repository\Exception\PersistenceException;
 
interface RepositoryInterface
{
    public function getById(mixed $id): ?EntityInterface;

    public function save(EntityInterface $entity): void;

    public function delete(mixed $id): void;
}