implements dummy role

Export/Aggregator/ReasonAggregator.php

@@ -22,6 +22,7 @@ namespace Chill\ActivityBundle\Export\Aggregator;
 use Symfony\Component\Form\FormBuilderInterface;
 use Doctrine\ORM\QueryBuilder;
 use Chill\MainBundle\Export\AggregatorInterface;
+use Symfony\Component\Security\Core\Role\Role;
 
 /**
  * 
@@ -84,5 +85,10 @@ class ReasonAggregator implements AggregatorInterface
     {
         return "Aggregate by activity reason";
     }
+    
+    public function requiredRole()
+    {
+        return new Role('dummy');
+    }
 
 }