--- /dev/null
+<?php
+
+namespace Drupal\simple_sitemap\Annotation;
+
+use Drupal\Component\Annotation\Plugin;
+
+/**
+ * Defines a UrlGenerator item annotation object.
+ *
+ * @package Drupal\simple_sitemap\Annotation
+ *
+ * @see \Drupal\simple_sitemap\Plugin\simple_sitemap\UrlGenerator\UrlGeneratorManager
+ * @see plugin_api
+ *
+ * @Annotation
+ */
+class UrlGenerator extends Plugin {
+
+ /**
+ * The generator ID.
+ *
+ * @var string
+ */
+ public $id;
+
+ /**
+ * The human-readable name of the generator.
+ *
+ * @ingroup plugin_translatable
+ *
+ * @var \Drupal\Core\Annotation\Translation
+ */
+ public $title;
+
+ /**
+ * A short description of the generator.
+ *
+ * @ingroup plugin_translatable
+ *
+ * @var \Drupal\Core\Annotation\Translation
+ */
+ public $description;
+
+ /**
+ * An integer to determine the weight of this generator relative to others.
+ *
+ * @var int
+ */
+ public $weight = 0;
+
+ /**
+ * Whether the generator is enabled by default.
+ *
+ * @var bool
+ */
+ public $enabled = TRUE;
+
+ /**
+ * Default generator settings.
+ *
+ * @var array
+ */
+ public $settings = [
+ 'instantiate_for_each_data_set' => FALSE,
+ ];
+}