refactor: use ReflectionMethod for isolated testing

Author: innocenzi

src/Tempest/Storage/src/GenericStorage.php

@@ -7,6 +7,7 @@
 use League\Flysystem\FilesystemAdapter;
 use League\Flysystem\ReadOnly\ReadOnlyFilesystemAdapter;
 use League\Flysystem\UrlGeneration\TemporaryUrlGenerator;
+use ReflectionMethod;
 use Tempest\Reflection\MethodReflector;
 use Tempest\Storage\Config\StorageConfig;
 
@@ -155,7 +156,7 @@ public function list(string $location = '', bool $deep = false): DirectoryListin
     private function createAdapter(): FilesystemAdapter
     {
         $this->assertAdapterInstalled(
-            MethodReflector::fromParts($this->storageConfig, 'createAdapter')->getReturnType()->getName(),
+            new ReflectionMethod($this->storageConfig, 'createAdapter')->getReturnType()->getName(),
         );
 
         $adapter = $this->storageConfig->createAdapter();