#include <vector>
#include "TTree.h"
#include "TFile.h"

class A : public TObject {
  private:
    std::vector<double> x;
  public:
    A() { x.resize(10, 5);}
    ~A() { x.clear(); }
  
  ClassDef(A, 1)
};

class B : public TObject {
  private:
    std::vector<A> a;
  public:
    B() { a.resize(4); }
    ~B() { a.clear(); }
  ClassDef(B, 1)
};

class C : public TObject {
  private:
    std::vector<B> b;
  public:
    C() { b.resize(2); }
    ~C() { b.clear(); }
  ClassDef(C, 1)
};


void CustomClassesTree() {
  
  TFile file("CustomClassTree.root", "RECREATE");
  TTree tree("tree", "Embedded Custom Classes Test");
  C *c = new C();
  tree.Branch("c", "C", &c, 32000, 2);
  
  for (int i=0; i<10; i++){
    tree.Fill();
  }
  
  tree.Write();
  file.Close();  
}