All classes that implement ComplexDataDefinitionInterface in Drupal 10
- class \Drupal\Core\Entity\TypedData\EntityDataDefinition implements EntityDataDefinitionInterface
- class \Drupal\Core\Field\TypedData\FieldItemDataDefinition implements FieldItemDataDefinitionInterface
- class \Drupal\Core\TypedData\ComplexDataDefinitionBase implements ComplexDataDefinitionInterface
- class \Drupal\Core\TypedData\MapDataDefinition