storeEvent example

public static function getSubscribedEvents(): array {
    return static::getEntityTypeEvents() + static::getFieldStorageDefinitionEvents();
  }

  /** * {@inheritdoc} */
  public function onEntityTypeCreate(EntityTypeInterface $entity_type) {
    if ($this->entityLastInstalledSchemaRepository->getLastInstalledDefinition($entity_type->id())) {
      $this->storeDefinitionUpdate(EntityTypeEvents::CREATE);
    }
    $this->storeEvent(EntityTypeEvents::CREATE);

    // Retrieve the live entity type definition in order to warm the static     // cache and then insert the new entity type definition, so we can test that     // the cache doesn't get stale after the event has fired.     if ($this->updateLiveDefinitions) {
      $this->entityTypeManager->getDefinition($entity_type->id());
      $this->state->set('entity_test_rev.entity_type', $entity_type);
    }
  }

  /** * {@inheritdoc} */