--- /dev/null
+<?php
+
+namespace Drupal\{{ machine_name }}\Access;
+
+use Drupal\Core\Access\AccessResult;
+use Drupal\Core\Routing\Access\AccessInterface;
+use Symfony\Component\Routing\Route;
+
+/**
+ * Checks if passed parameter matches the route configuration.
+ *
+ * @DCG
+ * To make use of this access checker add '{{ applies_to }}: Some value' entry to route
+ * definition under requirements section.
+ */
+class {{ class }} implements AccessInterface {
+
+ /**
+ * Access callback.
+ *
+ * @param \Symfony\Component\Routing\Route $route
+ * The route to check against.
+ * @param \ExampleInterface $parameter
+ * The parameter to test.
+ *
+ * @return \Drupal\Core\Access\AccessResultInterface
+ * The access result.
+ */
+ public function access(Route $route, \ExampleInterface $parameter) {
+ return AccessResult::allowedIf($parameter->getSomeValue() == $route->getRequirement('{{ applies_to }}'));
+ }
+
+}