Issue #2355977 by larowlan, dashaforbes: Fixed Code references...

Issue #2355977 by larowlan, dashaforbes: Fixed Code references RelationLinkManagerInterface::getRelationInternalIds but no such method.

core/modules/rest/src/LinkManager/LinkManager.php

@@ -62,4 +62,5 @@ public function getRelationUri($entity_type, $bundle, $field_name) {
   public function getRelationInternalIds($relation_uri) {
     return $this->relationLinkManager->getRelationInternalIds($relation_uri);
   }
+
 }

core/modules/rest/src/LinkManager/RelationLinkManager.php

@@ -12,7 +12,7 @@
 use Drupal\Core\Entity\ContentEntityTypeInterface;
 use Drupal\Core\Entity\EntityManagerInterface;
 
-class RelationLinkManager implements RelationLinkManagerInterface{
+class RelationLinkManager implements RelationLinkManagerInterface {
 
   /**
    * @var \Drupal\Core\Cache\CacheBackendInterface;
@@ -40,7 +40,7 @@ public function __construct(CacheBackendInterface $cache, EntityManagerInterface
   }
 
   /**
-   * Implements \Drupal\rest\LinkManager\RelationLinkManagerInterface::getRelationUri().
+   * {@inheritdoc}
    */
   public function getRelationUri($entity_type, $bundle, $field_name) {
     // @todo Make the base path configurable.
@@ -48,7 +48,7 @@ public function getRelationUri($entity_type, $bundle, $field_name) {
   }
 
   /**
-   * Implements \Drupal\rest\LinkManager\RelationLinkManagerInterface::getRelationInternalIds().
+   * {@inheritdoc}
    */
   public function getRelationInternalIds($relation_uri) {
     $relations = $this->getRelations();
@@ -71,7 +71,7 @@ public function getRelationInternalIds($relation_uri) {
    *   An array of typed data ids (entity_type, bundle, and field name) keyed
    *   by corresponding relation URI.
    */
-  public function getRelations() {
+  protected function getRelations() {
     $cid = 'rest:links:relations';
     $cache = $this->cache->get($cid);
     if (!$cache) {

core/modules/rest/src/LinkManager/RelationLinkManagerInterface.php

@@ -23,4 +23,16 @@ interface RelationLinkManagerInterface {
    *   The corresponding URI for the field.
    */
   public function getRelationUri($entity_type, $bundle, $field_name);
+
+  /**
+   * Translates a REST URI into internal IDs.
+   *
+   * @param string $relation_uri
+   *   Relation URI to transform into internal IDs
+   *
+   * @return array
+   *   Array with keys 'entity_type', 'bundle' and 'field_name'.
+   */
+  public function getRelationInternalIds($relation_uri);
+
 }

core/modules/rest/src/LinkManager/TypeLinkManager.php

@@ -63,7 +63,7 @@ public function getTypeInternalIds($type_uri) {
    *   An array of typed data ids (entity_type and bundle) keyed by
    *   corresponding type URI.
    */
-  public function getTypes() {
+  protected function getTypes() {
     $cid = 'rest:links:types';
     $cache = $this->cache->get($cid);
     if (!$cache) {