Replace $this::class by static::class

Author: h1karo

src/Key/Loader/DelegatingKeyLoader.php

@@ -49,7 +49,7 @@ public function load(ResourceInterface $resource): array
     {
         $loader = $this->findLoader($resource);
         if (null === $loader) {
-            throw new NotSupportedResourceException($this::class, $resource::class, __METHOD__);
+            throw new NotSupportedResourceException(static::class, $resource::class, __METHOD__);
         }
 
         return $loader->load($resource);

src/Key/Loader/FileKeyLoader.php

@@ -38,7 +38,7 @@ public function __construct(
     public function load(ResourceInterface $resource): array
     {
         if (!$resource instanceof File) {
-            throw new NotSupportedResourceException($this::class, $resource::class, __METHOD__);
+            throw new NotSupportedResourceException(static::class, $resource::class, __METHOD__);
         }
 
         $path = $resource->getPath();