array getChoices() Returns the list of entities.

array getPreferredViews() Returns the choice views of the preferred choices as nested array with

interface EntityLoaderInterface Custom loader for entities in the choice list.

array getValuesForChoices(array $entities) Returns the values corresponding to the given entities

string getIdField() Returns the name of the ID field. This method assumes that the object

array getRemainingViews() Returns the choice views of the choices that are not preferred as nested

array getChoicesForValues(array $values) Returns the entities corresponding to the given values