%%cpp -d
#include "RooRealVar.h"
#include "RooDataSet.h"
#include "RooChebychev.h"
#include "TCanvas.h"
#include "TAxis.h"
#include "RooPlot.h"
#include "RooNumGenConfig.h"
#include "RooArgSet.h"
#include <iomanip>
using namespace RooFit;

RooRealVar x("x", "x", 0, 10);
RooChebychev model("model", "model", x, RooArgList(0, 0.5, -0.1));

RooAbsPdf::defaultGeneratorConfig()->method1D(false, false).setLabel("RooAcceptReject");

std::unique_ptr<RooDataSet> data_ar{model.generate(x, 10000, Verbose(true))};
data_ar->Print();

model.specialGeneratorConfig(true)->method1D(false, false).setLabel("RooFoamGenerator");

RooAbsPdf::defaultGeneratorConfig()->getConfigSection("RooAcceptReject").setRealValue("nTrial1D", 2000);

model.specialGeneratorConfig()->getConfigSection("RooFoamGenerator").setRealValue("chatLevel", 1);

std::unique_ptr<RooDataSet> data_foam{model.generate(x, 10000, Verbose())};
data_foam->Print();