class FieldStorageConfigListBuilder

class FieldStorageConfigListBuilder extends ConfigEntityListBuilder {
    
    /**
     * An array of information about field types.
     *
     * @var array
     */
    protected $fieldTypes;
    
    /**
     * The entity type manager.
     *
     * @var \Drupal\Core\Entity\EntityTypeManagerInterface
     */
    protected $entityTypeManager;
    
    /**
     * An array of entity bundle information.
     *
     * @var array
     */
    protected $bundles;
    
    /**
     * The field type manager.
     *
     * @var \Drupal\Core\Field\FieldTypePluginManagerInterface
     */
    protected $fieldTypeManager;
    
    /**
     * Constructs a new FieldStorageConfigListBuilder object.
     *
     * @param \Drupal\Core\Entity\EntityTypeInterface $entity_type
     *   The entity type definition.
     * @param \Drupal\Core\Entity\EntityTypeManagerInterface $entity_type_manager
     *   The entity type manager.
     * @param \Drupal\Core\Field\FieldTypePluginManagerInterface $field_type_manager
     *   The 'field type' plugin manager.
     * @param \Drupal\Core\Entity\EntityTypeBundleInfoInterface $bundle_info_service
     *   The bundle info service.
     */
    public function __construct(EntityTypeInterface $entity_type, EntityTypeManagerInterface $entity_type_manager, FieldTypePluginManagerInterface $field_type_manager, EntityTypeBundleInfoInterface $bundle_info_service) {
        parent::__construct($entity_type, $entity_type_manager->getStorage($entity_type->id()));
        $this->entityTypeManager = $entity_type_manager;
        $this->bundles = $bundle_info_service->getAllBundleInfo();
        $this->fieldTypeManager = $field_type_manager;
        $this->fieldTypes = $this->fieldTypeManager
            ->getDefinitions();
        $this->limit = FALSE;
    }
    
    /**
     * {@inheritdoc}
     */
    public static function createInstance(ContainerInterface $container, EntityTypeInterface $entity_type) {
        return new static($entity_type, $container->get('entity_type.manager'), $container->get('plugin.manager.field.field_type'), $container->get('entity_type.bundle.info'));
    }
    
    /**
     * {@inheritdoc}
     */
    public function buildHeader() {
        $header['id'] = $this->t('Field name');
        $header['entity_type'] = $this->t('Entity type');
        $header['type'] = [
            'data' => $this->t('Field type'),
            'class' => [
                RESPONSIVE_PRIORITY_MEDIUM,
            ],
        ];
        $header['usage'] = $this->t('Used in');
        return $header;
    }
    
    /**
     * {@inheritdoc}
     */
    public function buildRow(EntityInterface $field_storage) {
        if ($field_storage->isLocked()) {
            $row['class'] = [
                'menu-disabled',
            ];
            $row['data']['id'] = $this->t('@field_name (Locked)', [
                '@field_name' => $field_storage->getName(),
            ]);
        }
        else {
            $row['data']['id'] = $field_storage->getName();
        }
        $entity_type_id = $field_storage->getTargetEntityTypeId();
        // Adding the entity type.
        $row['data']['entity_type'] = $entity_type_id;
        $field_type = $this->fieldTypes[$field_storage->getType()];
        $row['data']['type'] = $this->t('@type (module: @module)', [
            '@type' => $field_type['label'],
            '@module' => $field_type['provider'],
        ]);
        $usage = [];
        foreach ($field_storage->getBundles() as $bundle) {
            if ($route_info = FieldUI::getOverviewRouteInfo($entity_type_id, $bundle)) {
                $usage[] = Link::fromTextAndUrl($this->bundles[$entity_type_id][$bundle]['label'], $route_info)
                    ->toRenderable();
            }
            else {
                $usage[] = $this->bundles[$entity_type_id][$bundle]['label'];
            }
        }
        $row['data']['usage']['data'] = [
            '#theme' => 'item_list',
            '#items' => $usage,
            '#context' => [
                'list_style' => 'comma-list',
            ],
        ];
        return $row;
    }

}