Small code changes for @ctrl-f5's PR.

- Dropped some "setParameters" calls if unused in transformer.
- Add correct copyright
- Sprintf instead of string concat
- Small ident changes courtesy of phpstorm.

app/Transformers/AbstractTransformer.php

@@ -34,11 +34,17 @@ abstract class AbstractTransformer extends TransformerAbstract
 {
     protected ParameterBag $parameters;
 
+    /**
+     * @deprecated
+     */
     final public function getParameters(): ParameterBag
     {
         return $this->parameters;
     }
 
+    /**
+     * @deprecated
+     */
     final public function setParameters(ParameterBag $parameters): void
     {
         $this->parameters = $parameters;