Add additional return types

Author: mbardelmeijer

src/CmsmsChannel.php

@@ -14,7 +14,7 @@ public function __construct(
     {
     }
 
-    public function send($notifiable, Notification $notification)
+    public function send($notifiable, Notification $notification): void
     {
         if (!$recipient = $notifiable->routeNotificationFor('Cmsms')) {
             return;

src/CmsmsClient.php

@@ -17,11 +17,9 @@ public function __construct(
         protected GuzzleClient $client,
         protected string $productToken,
     )    {
-        $this->client = $client;
-        $this->productToken = $productToken;
     }
 
-    public function send(CmsmsMessage $message, string $recipient)
+    public function send(CmsmsMessage $message, string $recipient): void
     {
         if (is_null(Arr::get($message->toXmlArray(), 'FROM'))) {
             $message->originator(config('services.cmsms.originator'));

src/CmsmsServiceProvider.php

@@ -10,7 +10,7 @@
 
 class CmsmsServiceProvider extends ServiceProvider
 {
-    public function boot()
+    public function boot(): void
     {
         $this->app->when(CmsmsChannel::class)
             ->needs(CmsmsClient::class)