+       public function prepend(ContainerBuilder $container): void {
+               /*Load rapsysuser configurations
+               $rapsysusers = $container->getExtensionConfig($alias = RapsysUserBundle::getAlias());
+
+               //Recursively merge rapsysuser configurations
+               $rapsysuser = array_reduce(
+                       $rapsysusers,
+                       function ($res, $i) {
+                               return array_merge_recursive($res, $i);
+                       },
+                       []
+               );
+
+               //Set rapsysuser.languages key
+               $container->setParameter($alias, $rapsysuser);*/
+