public FieldItemInterface::storageSettingsForm(array &$form

public FieldItemInterface::__get($property_name)

public FieldItemInterface::getLangcode()

public FieldItemInterface::fieldSettingsForm(array $form, FormStateInterface

public static FieldItemInterface::storageSettingsFromConfigData(array

public static FieldItemInterface::storageSettingsToConfigData(array

public FieldItemInterface::preSave()

Interface for entity field items. Entity field items are typed data objects containing the field values, i.e. implementing the ComplexDataInterface

public static FieldItemInterface::mainPropertyName()

public FieldItemInterface::getEntity()