Added missing types

Author: GrahamCampbell

src/Model/Project.php

@@ -1118,7 +1118,7 @@ public function removeSnippet(int $id)
      *
      * @return Group
      */
-    public function transfer($group_id)
+    public function transfer(int $group_id)
     {
         $group = new Group($group_id, $this->getClient());
 

src/Model/User.php

@@ -220,7 +220,7 @@ public function removeKey(int $id)
      *
      * @return User
      */
-    public function addToGroup($group_id, int $access_level)
+    public function addToGroup(int $group_id, int $access_level)
     {
         $group = new Group($group_id, $this->getClient());
 
@@ -232,7 +232,7 @@ public function addToGroup($group_id, int $access_level)
      *
      * @return bool
      */
-    public function removeFromGroup($group_id)
+    public function removeFromGroup(int $group_id)
     {
         $group = new Group($group_id, $this->getClient());