LibraryItemController constructor.
\Drupal\Core\Datetime\DateFormatterInterface $date_formatter: The date formatter service.
\Drupal\Core\Entity\EntityTypeManagerInterface $entity_type_manager: The entity type manager service.
\Drupal\Core\Render\Renderer $renderer: The renderer service.
public function __construct(DateFormatterInterface $date_formatter, EntityTypeManagerInterface $entity_type_manager, Renderer $renderer) {
$this->dateFormatter = $date_formatter;
$this->entityTypeManager = $entity_type_manager;
$this->renderer = $renderer;
}