All classes that implement FieldStorageDefinitionInterface in Zircon Profile 8
- class \Drupal\Core\Field\BaseFieldDefinition implements FieldDefinitionInterface, FieldStorageDefinitionInterface uses UnchangingCacheableDependencyTrait
- class \Drupal\entity_test\FieldStorageDefinition
- class \Drupal\field\Entity\FieldStorageConfig implements FieldStorageConfigInterface