QML Repeater : where are the objects?

import QtQuick 2.5

Item {
    Repeater {
        model: 3
        Item {
            objectName: "Root"
            Rectangle {
                objectName: "Rect"
                Repeater {
                    model: 5
                    Rectangle {
                        objectName: "Child"
                    }
                }
            }
        }
    }
}

QQuickItem(0x55da76bea800, parent=0x0, geometry=0,0 0x0)
 QQuickRepeater(0x55da76c1b270)
  QQmlComponent(0x55da76c1c030)
 QQuickItem(0x55da76c1cb70, name="Root", parent=0x55da76bea800, geometry=0,0 0x0)
  QQuickRectangle(0x55da76c43760, name = "Rect")
   QQuickRepeater(0x55da76c43a30, parent=0x55da76c43760, geometry=0,0 0x0)
    QQmlComponent(0x55da76c44570)
 QQuickItem(0x55da76c471f0, name="Root", parent=0x55da76bea800, geometry=0,0 0x0)
  QQuickRectangle(0x55da76c47430, name = "Rect")
   QQuickRepeater(0x55da76c47700, parent=0x55da76c47430, geometry=0,0 0x0)
    QQmlComponent(0x55da76c48050)
 QQuickItem(0x55da76c4ab90, name="Root", parent=0x55da76bea800, geometry=0,0 0x0)
  QQuickRectangle(0x55da76c4ada0, name = "Rect")
   QQuickRepeater(0x55da76c4b010, parent=0x55da76c4ada0, geometry=0,0 0x0)
    QQmlComponent(0x55da76c4b9b0)

static int n = 0;
void dumpTree(QQuickItem* root);
void dumpTree(QObject* root)
{
  QString sep(n, ' ');
  qDebug() << qPrintable(sep) << root;
  n++;
  for(auto cld : root->children())
  {
    if(auto item = qobject_cast<QQuickItem*>(cld))
    {
      dumpTree(item);
    }
    else
    {
      dumpTree(cld);
    }
  }
  n--;
}
void dumpTree(QQuickItem* root)
{
  QString sep(n, ' ');
  qDebug() << qPrintable(sep) << root;
  n++;
  std::set<QObject*> dumped;
  for(auto cld : root->children())
  {
    dumpTree(cld);
    dumped.insert(cld);
  }
  for(auto cld : root->childItems())
  {
    if(dumped.find((QObject*)cld) == dumped.end())
      dumpTree(cld);
  }
  n--;

QCoreApplication app(argc, argv);
ossia::context context;
QQmlEngine engine;

QFile f("TestQmlRepeater.qml");
f.open(QIODevice::ReadOnly);
QQmlComponent component(&engine);
component.setData(f.readAll(), QUrl());
auto item = (QQuickItem*) component.create();
for(int i = 0; i < 100; i++)
  qApp->processEvents();
dumpTree(item);