--- /dev/null
+<?php
+
+namespace Drupal\entity_test\Entity;
+
+use Drupal\Core\Entity\EntityChangedInterface;
+use Drupal\Core\Entity\EntityChangedTrait;
+use Drupal\Core\Entity\EntityTypeInterface;
+use Drupal\Core\Field\BaseFieldDefinition;
+
+/**
+ * Defines the test entity class.
+ *
+ * @ContentEntityType(
+ * id = "entity_test_mul_changed",
+ * label = @Translation("Test entity - data table"),
+ * handlers = {
+ * "view_builder" = "Drupal\entity_test\EntityTestViewBuilder",
+ * "access" = "Drupal\entity_test\EntityTestAccessControlHandler",
+ * "form" = {
+ * "default" = "Drupal\entity_test\EntityTestForm",
+ * "delete" = "Drupal\entity_test\EntityTestDeleteForm"
+ * },
+ * "route_provider" = {
+ * "html" = "Drupal\Core\Entity\Routing\DefaultHtmlRouteProvider",
+ * },
+ * "translation" = "Drupal\content_translation\ContentTranslationHandler",
+ * "views_data" = "Drupal\views\EntityViewsData"
+ * },
+ * base_table = "entity_test_mul_changed",
+ * data_table = "entity_test_mul_changed_property",
+ * translatable = TRUE,
+ * entity_keys = {
+ * "id" = "id",
+ * "uuid" = "uuid",
+ * "bundle" = "type",
+ * "label" = "name",
+ * "langcode" = "langcode"
+ * },
+ * links = {
+ * "add-form" = "/entity_test_mul_changed/add",
+ * "canonical" = "/entity_test_mul_changed/manage/{entity_test_mul_changed}",
+ * "edit-form" = "/entity_test_mul_changed/manage/{entity_test_mul_changed}/edit",
+ * "delete-form" = "/entity_test/delete/entity_test_mul_changed/{entity_test_mul_changed}",
+ * },
+ * field_ui_base_route = "entity.entity_test_mul_changed.admin_form",
+ * )
+ */
+class EntityTestMulChanged extends EntityTestMul implements EntityChangedInterface {
+
+ use EntityChangedTrait;
+
+ /**
+ * {@inheritdoc}
+ */
+ public static function baseFieldDefinitions(EntityTypeInterface $entity_type) {
+ $fields = parent::baseFieldDefinitions($entity_type);
+
+ $fields['changed'] = BaseFieldDefinition::create('changed_test')
+ ->setLabel(t('Changed'))
+ ->setDescription(t('The time that the entity was last edited.'))
+ ->setTranslatable(TRUE);
+
+ $fields['not_translatable'] = BaseFieldDefinition::create('string')
+ ->setLabel(t('Non translatable'))
+ ->setDescription(t('A non-translatable string field'));
+
+ return $fields;
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function save() {
+ // Ensure a new timestamp.
+ sleep(1);
+ parent::save();
+ }
+
+}