Code Sniffer Results - fixes

Author: kielsoft

Controller/Payment/Callback.php

@@ -44,7 +44,7 @@ public function execute() {
             ]);
 
             $reference = explode('_', $transactionDetails->data->reference, 2);
-            $reference = @$reference[0];
+            $reference = ($reference[0])?: 0;
 
             $order = $this->orderInterface->loadByIncrementId($reference);
 

Model/Ui/ConfigProvider.php

@@ -8,7 +8,7 @@
 /**
  * Class ConfigProvider
  */
-final class ConfigProvider implements ConfigProviderInterface
+class ConfigProvider implements ConfigProviderInterface
 {
 
     protected $method;