public FieldItemDataDefinition::getPrope

public WidgetBase::flagErrors(FieldItemListInterface $items, ConstraintViolationListInterface

hook_field_storage_config_update_forbid(\Drupal\field\FieldStorageConfigInterface $field_storage, \Drupal\field\FieldStorageConfigInterface $prior

public FieldStorageDef

Field-type specific settings. An array of key/value pairs, The keys and default values are defined by the field type.

protected FieldStorageConfig::getFieldItemClass()

public static EntityReferenceFieldItemList

The human-readable name of the field type. Type:

public FieldConfigBase::isList() Returns

public FieldConfigInterface::setConstraints(array $constraints)