Add doc blocks

modules/backend/models/User.php

@@ -100,6 +100,10 @@ class User extends UserBase
         }
     }
 
+    /**
+     * After create event
+     * @return void
+     */
     public function afterCreate()
     {
         $this->restorePurgedValues();
@@ -109,12 +113,20 @@ class User extends UserBase
         }
     }
 
+    /**
+     * After login event
+     * @return void
+     */
     public function afterLogin()
     {
         parent::afterLogin();
         Event::fire('backend.user.login', [$this]);
     }
 
+    /**
+     * Sends an invitation to the user using template "backend::mail.invite".
+     * @return void
+     */
     public function sendInvitation()
     {
         $data = [