{
    using namespace RooFit;
    using namespace RooStats;

    // Model built reading theHLF card
    HLFactory hlf("HLFactoryExample","example_3c_card.rs");

    RooWorkspace* w = hlf.GetWs();

    // Generate a toy sample according to the expected number of events
    RooRealVar* imass= w->var("imass");
    RooAbsPdf* model = w->pdf("model");
    RooDataSet *data = model->generate(*imass,Extended());
    
    // ML fit of the model to the data
    model->fitTo(*data);
    
    // Plot everything on a frame
    RooPlot* imassframe = imass->frame();
    data->plotOn(imassframe);
    model->plotOn(imassframe);
    model->plotOn(imassframe,Components(*w->pdf("background")),LineStyle(kDashed));
    
    imassframe->Draw();
    }