All classes that implement DerivablePluginDefinitionInterface in Drupal 8
- class \Drupal\Core\Layout\LayoutDefinition implements DerivablePluginDefinitionInterface, PluginDefinitionInterface, DependentPluginDefinitionInterface uses DependentPluginDefinitionTrait
- class \Drupal\ui_patterns\Definition\PatternDefinition implements \Drupal\ui_patterns\Definition\ArrayAccess, DerivablePluginDefinitionInterface uses ArrayAccessDefinitionTrait