📦 Explicitly specify possible null in type

Author: andrew-demb

.php-cs-fixer.dist.php

@@ -13,6 +13,7 @@
         'array_syntax' => ['syntax' => 'short'],
         'declare_strict_types' => true,
         'single_line_throw' => false,
+        'nullable_type_declaration_for_default_null_value' => true,
         'visibility_required' => [
             'elements' => [
                 'const',

src/Collector/Twig/HttpMessageMarkupExtension.php

@@ -20,7 +20,7 @@ class HttpMessageMarkupExtension extends AbstractExtension
 
     private DataDumperInterface $dumper;
 
-    public function __construct(ClonerInterface $cloner = null, DataDumperInterface $dumper = null)
+    public function __construct(?ClonerInterface $cloner = null, ?DataDumperInterface $dumper = null)
     {
         $this->cloner = $cloner ?: new VarCloner();
         $this->dumper = $dumper ?: new HtmlDumper();

src/Discovery/ConfiguredClientsStrategy.php

@@ -21,7 +21,7 @@ class ConfiguredClientsStrategy implements DiscoveryStrategy
 
     private static ?HttpAsyncClient $asyncClient = null;
 
-    public function __construct(ClientInterface $httpClient = null, HttpAsyncClient $asyncClient = null)
+    public function __construct(?ClientInterface $httpClient = null, ?HttpAsyncClient $asyncClient = null)
     {
         self::$client = $httpClient;
         self::$asyncClient = $asyncClient;