public FieldItemList::getFieldDefinition() Gets

public FieldItemList::setLangcode($langcode) Sets

protected FieldItemList::defaultValueWidget(FormStateInterface $form_state)

public FieldItemList::__isset($property_name)

public FieldItemList::defaultAccess($operation = 'view', AccountInterface

Numerically indexed array of field items. Type: \Drupal\Core\Field\FieldItemInterface[]

public FieldItemList::getSettings() Returns

public FieldItemList::defaultValuesFormSubmit(array $element, array &$form

The langcode of the field values held in the object. Type: string File

public FieldItemList::setValue($values, $notify = TRUE)