fix: Wrong service id for CopyTransformer.

CHANGELOG.md

@@ -13,6 +13,7 @@
   will try the next suitable transformer.
 * style: Remove unused vars.
 * feat: Transformers now have the option to have an invariant target type.
+* fix: Wrong service id for `CopyTransformer`.
 
 ## 0.5.8
 

config/services.php

@@ -149,7 +149,7 @@
         ->tag('rekalogika.mapper.transformer', ['priority' => -950]);
 
     $services
-        ->set('rekalogika.mapper.transformer.null', CopyTransformer::class)
+        ->set('rekalogika.mapper.transformer.copy', CopyTransformer::class)
         ->tag('rekalogika.mapper.transformer', ['priority' => -1000]);