protected function postLoad(array &$entities) {
    $entity_class = $this->getEntityClass();
    $entity_class::postLoad($this, $entities);
    // Call hook_entity_load().
    foreach ($this->moduleHandler()
               ->getImplementations('entity_load') as $module) {
      $function = $module . '_entity_load';
      $function($entities, $this->entityTypeId);
    }
    // Call hook_TYPE_load().
    foreach ($this->moduleHandler()
               ->getImplementations($this->entityTypeId . '_load') as $module) {
      $function = $module . '_' . $this->entityTypeId . '_load';
      $function($entities);
    }
  }

protected function postLoad(array &$entities) {
    // We have to determine the bundle first.
    $bundle = FALSE;
    if (!empty($entities) && isset($this->bundleKey)) {
      $entity = reset($entities);
      $bundle = $entity->get($this->bundleKey)->getString();
    }
    $entity_class = $this->getEntityClass($bundle);
    $entity_class::postLoad($this, $entities);
    // Call hook_entity_load().
    foreach ($this->moduleHandler()
               ->getImplementations('entity_load') as $module) {
      $function = $module . '_entity_load';
      $function($entities, $this->entityTypeId);
    }
    // Call hook_TYPE_load().
    foreach ($this->moduleHandler()
               ->getImplementations($this->entityTypeId . '_load') as $module) {
      $function = $module . '_' . $this->entityTypeId . '_load';
      $function($entities);
    }
  }