1<?php
2
3declare(strict_types=1);
4
5namespace JMS\Serializer;
6
7interface NullAwareVisitorInterface
8{
9    /**
10     * Determine if a value conveys a null value.
11     * An example could be an xml element (Dom, SimpleXml, ...) that is tagged with a xsi:nil attribute
12     *
13     * @param mixed $value
14     */
15    public function isNull($value): bool;
16}
17