updated core from 8.4 to 8.5 : bug with login_destination

core/modules/contact/src/ContactFormEditForm.php

@@ -15,6 +15,8 @@ use Drupal\Core\Render\Element\PathElement;
 
 /**
  * Base form for contact form edit forms.
+ *
+ * @internal
  */
 class ContactFormEditForm extends EntityForm implements ContainerInjectionInterface {
   use ConfigFormBaseTrait;

core/modules/contact/src/MessageForm.php

@@ -14,6 +14,8 @@ use Symfony\Component\DependencyInjection\ContainerInterface;
 
 /**
  * Form controller for contact message forms.
+ *
+ * @internal
  */
 class MessageForm extends ContentEntityForm {
 

core/modules/contact/src/Plugin/rest/resource/ContactMessageResource.php

@@ -0,0 +1,25 @@
+<?php
+
+namespace Drupal\contact\Plugin\rest\resource;
+
+use Drupal\rest\Plugin\rest\resource\EntityResource;
+
+/**
+ * Customizes the entity REST Resource plugin for Contact's Message entities.
+ *
+ * Message entities are not stored, so they cannot be:
+ * - retrieved (GET)
+ * - modified (PATCH)
+ * - deleted (DELETE)
+ * Messages can only be sent/created (POST).
+ */
+class ContactMessageResource extends EntityResource {
+
+  /**
+   * {@inheritdoc}
+   */
+  public function availableMethods() {
+    return ['POST'];
+  }
+
+}