17 namespace ActsExamples {
 
   18 namespace Contextual {
 
   19 class PayloadDecorator;
 
   20 class PayloadDetectorElement;
 
   34       boost::program_options::options_description& opt) 
const override;
 
   36   std::pair<ActsExamples::IBaseDetector::TrackingGeometryPtr, ContextDecorators>
 
   37   finalize(
const boost::program_options::variables_map& vm,
 
   38            std::shared_ptr<const Acts::IMaterialDecorator> mdecorator) 
override;