The entity field manager. Type:

public static FieldItemInterface::schema(FieldStorageDefinitionInterface

protected FieldConfigStorageBase::mapFromStorageRecords(array

public FieldModuleUninstallValidator::

public FieldStorageDefinitionListener

public FieldItemListInterface::delete()

protected static WidgetBase::getWidgetStateParents(array $parents, $field_name)

public FieldConfigInterface::addConstraint($constraint_name

public FieldConfigBase::setLabel($label) Sets

public FieldConfigInterface::isDeleted()