Various code cleanup.

app/Http/Controllers/Transaction/CreateController.php

@@ -85,9 +85,9 @@ class CreateController extends Controller
     /**
      * Create a new transaction group.
      *
-     * @param string|null objectType
+     * @param string|null $objectType
      *
-     * @return Factory|View
+     * @return Factory|\Illuminate\Contracts\View\View
      */
     public function create(?string $objectType)
     {

app/Http/Controllers/Transaction/DeleteController.php

@@ -37,8 +37,7 @@ use URL;
  */
 class DeleteController extends Controller
 {
-    /** @var TransactionGroupRepositoryInterface */
-    private $repository;
+    private TransactionGroupRepositoryInterface $repository;
 
     /**
      * IndexController constructor.
@@ -67,7 +66,7 @@ class DeleteController extends Controller
      *
      * @param TransactionGroup $group
      *
-     * @return RedirectResponse|Redirector|View
+     * @return mixed
      */
     public function delete(TransactionGroup $group)
     {