function it_get_stream_of_id_given(EventStream $stream, Id $aggregateId)
 {
     $aggregateId->id()->willReturn('aggregate-id');
     $eventCollection = new DomainEventCollection([new DomainEventStub('foo', 'bar')]);
     $stream->events()->shouldBeCalled()->willReturn($eventCollection);
     $stream->aggregateId()->shouldBeCalled()->willReturn($aggregateId);
     $this->appendTo($stream);
     $this->streamOfId($aggregateId)->shouldReturnAnInstanceOf(EventStream::class);
 }