def METHOD_NAME(self, select=None):
    self.ui.itemTree.clear()
    si = QtWidgets.QTreeWidgetItem(["Entire Scene"])
    si.gitem = self.scene
    self.ui.itemTree.addTopLevelItem(si)
    self.ui.itemTree.setCurrentItem(si)
    si.setExpanded(True)
    for child in self.scene.items():
        if child.parentItem() is None:
            self.updateItemTree(child, si, select=select)