All classes that implement CKEditorPluginConfigurableInterface in Zircon Profile 8
- class \Drupal\ckeditor\Plugin\CKEditorPlugin\DrupalImage implements CKEditorPluginConfigurableInterface
- class \Drupal\ckeditor\Plugin\CKEditorPlugin\StylesCombo implements CKEditorPluginConfigurableInterface
- class \Drupal\ckeditor_test\Plugin\CKEditorPlugin\LlamaContextualAndButton implements CKEditorPluginButtonsInterface, CKEditorPluginConfigurableInterface, CKEditorPluginContextualInterface