public static function backward(EventStoreInterface $eventStore, $streamName)
 {
     return new self($eventStore, $streamName, LinkRelation::FIRST(), LinkRelation::NEXT(), function (array $array) {
         return $array;
     });
 }
 /**
  * @test
  */
 public function navigate_stream_using_missing_link_returns_null()
 {
     $streamName = $this->prepareTestStream(1);
     $head = $this->es->openStreamFeed($streamName);
     $next = $this->es->navigateStreamFeed($head, LinkRelation::NEXT());
     $this->assertNull($next);
 }