+ doReturn(toBeReturned).when(context).getServiceReferences(NetconfOperationServiceFactory.class.getName(), null);
+
+ String innerFilterString = "innerfilter";
+ doReturn(innerFilterString).when(outerFilter).toString();
+
+ doReturn(innerFilter).when(context).createFilter(ConfigPersisterActivator.getFilterString());
+ doReturn(innerFilterString).when(innerFilter).toString();
+ doNothing().when(context).addServiceListener(any(ServiceListener.class), eq(innerFilterString));
+
+ doReturn(toBeReturned).when(context).getServiceReferences((String) null, innerFilterString);