3 namespace Drupal\Core\Field\Plugin\DataType;
6 * Defines the base plugin for deriving data types for field types.
8 * Note that the class only register the plugin, and is actually never used.
9 * \Drupal\Core\Field\FieldItemBase is available for use as base class.
13 * label = @Translation("Field item"),
14 * list_class = "\Drupal\Core\Field\FieldItemList",
15 * deriver = "Drupal\Core\Field\Plugin\DataType\Deriver\FieldItemDeriver"
18 abstract class FieldItem {