<?php

declare(strict_types=1);

interface SomeInterface
{
    public function someMethod(): object;
}

class SomeBrokenClass implements SomeInterface
{
    public function someMethod(): NonExistentClass { }
}

class SomeWorkingClass implements SomeInterface
{
    public function someMethod(): DateTimeImmutable { }
}

$proxyFactory = (\PHP_VERSION_ID >= 80400) ? new NativeProxyFactory : new ProxyFactory;