setUpdatedStates example

public function testProductStatesBeforeChangeEvent(): void
    {
        $updatedStates = [new UpdatedStates('foobar', ['foo'], ['bar'])];
        $context = Context::createDefaultContext();

        $event = new ProductStatesBeforeChangeEvent($updatedStates, $context);

        static::assertEquals($updatedStates, $event->getUpdatedStates());
        static::assertEquals($context, $event->getContext());

        $updatedStates = [new UpdatedStates('foobar', ['foo'], ['baz'])];
        $event->setUpdatedStates($updatedStates);

        static::assertEquals($updatedStates, $event->getUpdatedStates());
    }
}