--- /dev/null
+<?php
+
+namespace Drupal\menu_test\Plugin\Menu\LocalAction;
+
+use Drupal\Core\Menu\LocalActionDefault;
+use Drupal\Core\StringTranslation\StringTranslationTrait;
+
+/**
+ * Defines a local action plugin with a dynamic title.
+ */
+class TestLocalAction4 extends LocalActionDefault {
+
+ use StringTranslationTrait;
+
+ /**
+ * {@inheritdoc}
+ */
+ public function getTitle() {
+ return $this->t('My @arg action', ['@arg' => 'dynamic-title']);
+ }
+
+}