function it_should_update_post_list_projection(ProjectionStorage $projectionStorage)
{
$event = new PostWasPublished(PostId::generate(), 'title', 'content', new \DateTime());
$projectionStorage->save(Argument::type(PostListProjection::class))->shouldBeCalled();
$this->when($event);
}
public function execute(Command $command, Responder $responder)
{
$projections = $this->projectionStorage->find('post-list');
$responder->postsListedSuccessfully($projections);
}