ZF\Apigility\Doctrine\Server\Event\DoctrineResourceEvent::setEntityId PHP Method

    public function setEntityId($entityId)
    {
        $this->entityId = $entityId;
        return $this;
    }

 /**
  * Fetch a resource
  *
  * If the extractCollections array contains a collection for this resource
  * expand that collection instead of returning a link to the collection
  *
  * @param  mixed $id
  * @return ApiProblem|mixed
  */
 public function fetch($id)
 {
     $event = new DoctrineResourceEvent(DoctrineResourceEvent::EVENT_FETCH_PRE, $this);
     $event->setEntityClassName($this->getEntityClass());
     $event->setEntityId($id);
     $eventManager = $this->getEventManager();
     $response = $eventManager->trigger($event);
     if ($response->last() instanceof ApiProblem) {
         return $response->last();
     }
     $entity = $this->findEntity($id, 'fetch');
     if ($entity instanceof ApiProblem) {
         // @codeCoverageIgnoreStart
         return $entity;
     }
     // @codeCoverageIgnoreEnd
     $results = $this->triggerDoctrineEvent(DoctrineResourceEvent::EVENT_FETCH_POST, $entity);
     if ($results->last() instanceof ApiProblem) {
         return $results->last();
     }
     return $entity;
 }