public WidgetInterface::formElement(FieldItemListInterface $items,

Defines an interface for reacting to field creation, deletion, and updates. Hierarchy interface

Base class for all exceptions thrown by the Entity Field API functions. This class has no functionality of its own other than allowing all Entity

public FieldStorageConfig::setSettings(array $settings)

protected BaseFieldOverride::getBaseFieldDefinition()

public WidgetBase::extractFormValues(FieldItemListInterface $items, array $form

Name of the event triggered for field storage definition deletion. This event allows you to respond anytime a field storage definition is deleted

public FieldItemList::equals(FieldItemListInterface $list_to_compare)

public FieldItemInterface::__unset($property_name)

The base field definition. Type: