use IocInterop\Impl\Container;
use IocInterop\Interface\IocContainer;

$ioc = new Container();

$foo = $ioc->getService(Foo::class);

$ioc->setService(Foo::class, new Foo());

$ioc->setAlias('foo.foo', Foo::class);
$foo = $ioc->getService('foo.foo');

$ioc->getDefinition(Foo::class)
    ->setFactory(fn (IocContainer $ioc) : Foo => return new Foo());

$ioc->getDefinition(Foo::class)
    ->addExtender(function (IocContainer $ioc, Foo $foo) : Foo {
        $foo->bar = 'baz';
        return $foo;
    });