PHP Fatal error: Class Drupal\entity_reference_revisions\Plugin\Field\FieldType\EntityReferenceRevisionsItem contains 4 abstract methods and must therefore be declared abstract or implement the remaining methods

Hi all,

class EntityReferenceRevisionsItem implements interface OptionsProviderInterface, which holds 4 methods and should therefore implement them. If the interface is not implemented for type hinting causes the interface could simply be removed.

The original PHP error message reads like the following:
PHP Fatal error: Class Drupal\entity_reference_revisions\Plugin\Field\FieldType\EntityReferenceRevisionsItem contains 4 abstract methods and must therefore be declared abstract or implement the remaining methods (Drupal\Core\TypedData\OptionsProviderInterface::getPossibleValues, Drupal\Core\TypedData\OptionsProviderInterface::getPossibleOptions, Drupal\Core\TypedData\OptionsProviderInterface::getSettableValues, ...) in entity_reference_revisions/src/Plugin/Field/FieldType/EntityReferenceRevisionsItem.php on line 278

Best
Chris