--- /dev/null
+<?php
+
+namespace Drupal\rest\Plugin;
+
+use Drupal\Component\Plugin\PluginInspectionInterface;
+
+/**
+ * Specifies the publicly available methods of a resource plugin.
+ *
+ * @see \Drupal\rest\Annotation\RestResource
+ * @see \Drupal\rest\Plugin\Type\ResourcePluginManager
+ * @see \Drupal\rest\Plugin\ResourceBase
+ * @see plugin_api
+ *
+ * @ingroup third_party
+ */
+interface ResourceInterface extends PluginInspectionInterface {
+
+ /**
+ * Returns a collection of routes with URL path information for the resource.
+ *
+ * This method determines where a resource is reachable, what path
+ * replacements are used, the required HTTP method for the operation etc.
+ *
+ * @return \Symfony\Component\Routing\RouteCollection
+ * A collection of routes that should be registered for this resource.
+ */
+ public function routes();
+
+ /**
+ * Provides an array of permissions suitable for .permissions.yml files.
+ *
+ * A resource plugin can define a set of user permissions that are used on the
+ * routes for this resource or for other purposes.
+ *
+ * It is not required for a resource plugin to specify permissions: if they
+ * have their own access control mechanism, they can use that, and return the
+ * empty array.
+ *
+ * @return array
+ * The permission array.
+ */
+ public function permissions();
+
+ /**
+ * Returns the available HTTP request methods on this plugin.
+ *
+ * @return array
+ * The list of supported methods. Example: array('GET', 'POST', 'PATCH').
+ */
+ public function availableMethods();
+
+}