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

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

public static FormatterBase::isApplicable(FieldDefinitionInterface $fi

A boolean stating that fields of this type cannot be created through the UI. Type: bool File

The field type plugin manager. Type: \Drupal\Core\Field\FieldTypePluginManagerInterface File

public FieldConfigInterface::setLabel($label)

public FieldStorageConfig::preSave(EntityStorageInterface

public FieldItemInterface::preSave()

public FieldStorageDefinitionInterface

public BaseFieldDefinition::hasCustomStorage()