Flag indicating whether the field storage should be deleted when orphaned. By default field storages for configurable fields are removed when

field_entity_bundle_delete($entity_type_id, $bundle) Implements

public FieldStorageConfig::isBaseField()

public EntityReferenceFiel

The field type. Type: string File core/lib/Drupal/C

The key-value factory. Type:

public BaseFieldDefinition::getDisplayOptions($display_context)

public FieldItemInterface::__get($property_name)

public BaseFieldDefinition::getSettings()

public FieldConfigBase::getSetting($setting_name)