--- /dev/null
+<?php
+
+namespace Drupal\migrate_example_advanced_setup\Plugin\rest\resource;
+
+use Drupal\rest\Plugin\ResourceBase;
+use Drupal\rest\ResourceResponse;
+
+/**
+ * Provides varieties as two endpoints, one for reds and one for whites.
+ *
+ * @RestResource(
+ * id = "migrate_example_advanced_variety_items",
+ * label = @Translation("Advanced migration example - Variety data"),
+ * uri_paths = {
+ * "canonical" = "/migrate_example_advanced_variety_list/{variety}"
+ * }
+ * )
+ */
+class VarietyItems extends ResourceBase {
+
+ /**
+ * Responds to GET requests.
+ *
+ * @param string $variety
+ * Machine name of the variety to retrieve.
+ *
+ * @return \Drupal\rest\ResourceResponse
+ * The response containing the requested variety data.
+ */
+ public function get($variety = NULL) {
+ $varieties = [
+ 'retsina' => [
+ 'name' => 'Retsina',
+ 'parent' => 1, // categoryid for 'white'.
+ 'details' => 'Greek',
+ ],
+ 'trebbiano' => [
+ 'name' => 'Trebbiano',
+ 'parent' => 1, // categoryid for 'white'.
+ 'details' => 'Italian',
+ ],
+ 'valpolicella' => [
+ 'name' => 'Valpolicella',
+ 'parent' => 3, // categoryid for 'red'.
+ 'details' => 'Italian Venoto region',
+ ],
+ 'bardolino' => [
+ 'name' => 'Bardolino',
+ 'parent' => 3, // categoryid for 'red'.
+ 'details' => 'Italian Venoto region',
+ ],
+ ];
+ if (isset($varieties[$variety])) {
+ $data = ['variety' => $varieties[$variety]];
+ }
+ else {
+ $data = [];
+ }
+
+ $response = new ResourceResponse($data, 200);
+ return $response;
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function permissions() {
+ // Remove permissions so the resource is available to all.
+ return [];
+ }
+
+}