Various code cleanup.

app/Api/V1/Controllers/System/UserController.php

@@ -90,6 +90,7 @@ class UserController extends Controller
      * Display a listing of the resource.
      *
      * @return JsonResponse
+     * @throws FireflyException
      * @codeCoverageIgnore
      */
     public function index(): JsonResponse

app/Api/V1/Controllers/User/PreferencesController.php

@@ -47,6 +47,7 @@ class PreferencesController extends Controller
      * List all of them.
      *
      * @return JsonResponse
+     * @throws \FireflyIII\Exceptions\FireflyException
      * @codeCoverageIgnore
      */
     public function index(): JsonResponse
@@ -115,8 +116,10 @@ class PreferencesController extends Controller
 
     /**
      * @param PreferenceUpdateRequest $request
+     * @param Preference              $preference
      *
      * @return JsonResponse
+     * @throws \FireflyIII\Exceptions\FireflyException
      */
     public function update(PreferenceUpdateRequest $request, Preference $preference): JsonResponse
     {

app/Api/V1/Controllers/Webhook/AttemptController.php

@@ -62,9 +62,11 @@ class AttemptController extends Controller
     }
 
     /**
-     * @param Webhook $webhook
+     * @param Webhook        $webhook
+     * @param WebhookMessage $message
      *
      * @return JsonResponse
+     * @throws FireflyException
      */
     public function index(Webhook $webhook, WebhookMessage $message): JsonResponse
     {

app/Api/V1/Controllers/Webhook/DestroyController.php

@@ -74,9 +74,12 @@ class DestroyController extends Controller
     /**
      * Remove the specified resource from storage.
      *
-     * @param Webhook $webhook
+     * @param Webhook        $webhook
+     * @param WebhookMessage $message
+     * @param WebhookAttempt $attempt
      *
      * @return JsonResponse
+     * @throws FireflyException
      * @codeCoverageIgnore
      */
     public function destroyAttempt(Webhook $webhook, WebhookMessage $message, WebhookAttempt $attempt): JsonResponse
@@ -97,9 +100,11 @@ class DestroyController extends Controller
     /**
      * Remove the specified resource from storage.
      *
-     * @param Webhook $webhook
+     * @param Webhook        $webhook
+     * @param WebhookMessage $message
      *
      * @return JsonResponse
+     * @throws FireflyException
      * @codeCoverageIgnore
      */
     public function destroyMessage(Webhook $webhook, WebhookMessage $message): JsonResponse

app/Api/V1/Controllers/Webhook/MessageController.php

@@ -61,6 +61,7 @@ class MessageController extends Controller
      * @param Webhook $webhook
      *
      * @return JsonResponse
+     * @throws FireflyException
      */
     public function index(Webhook $webhook): JsonResponse
     {

app/Api/V1/Controllers/Webhook/ShowController.php

@@ -62,6 +62,7 @@ class ShowController extends Controller
      * Display a listing of the webhooks of the user.
      *
      * @return JsonResponse
+     * @throws \FireflyIII\Exceptions\FireflyException
      * @codeCoverageIgnore
      */
     public function index(): JsonResponse

app/Api/V1/Controllers/Webhook/SubmitController.php

@@ -73,6 +73,6 @@ class SubmitController extends Controller
             SendWebhookMessage::dispatch($message)->afterResponse();
         }
 
-        return response()->json([], 200);
+        return response()->json([]);
     }
 }