--- /dev/null
+<?php
+
+namespace Drupal\image;
+
+use Drupal\Core\Form\FormStateInterface;
+
+/**
+ * Provides a base class for configurable image effects.
+ *
+ * @see \Drupal\image\Annotation\ImageEffect
+ * @see \Drupal\image\ConfigurableImageEffectInterface
+ * @see \Drupal\image\ImageEffectInterface
+ * @see \Drupal\image\ImageEffectBase
+ * @see \Drupal\image\ImageEffectManager
+ * @see plugin_api
+ */
+abstract class ConfigurableImageEffectBase extends ImageEffectBase implements ConfigurableImageEffectInterface {
+
+ /**
+ * {@inheritdoc}
+ */
+ public function validateConfigurationForm(array &$form, FormStateInterface $form_state) {
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function submitConfigurationForm(array &$form, FormStateInterface $form_state) {
+ }
+
+}