public static FieldItemBase::storageSettingsFromConfigData(array $settings)

public FieldItemList::postSave($update) Defines

protected WidgetBase::formSingleElement(FieldItemListInterface $items, $delta

public FieldDefinitionInterface::isTranslatable()

public FieldStorageDef

public FieldDefinitionInterface::isRequired()

Defines the Field entity. Plugin annotation @ConfigEntityType(

public FieldConfigInterface::setConstraints(array $constraints)

public BaseFieldDefinition::getPropertyDefinitions()

public FieldItemListInterface::getFieldDefinition()