code: def __extract_autoWidgets(self):
          
          if self.__autoWidgets_calculated: return
  
          if self._builder is not None:
              for wid in self._builder.get_objects():
                  # General workaround for issue
                  # https://bugzilla.gnome.org/show_bug.cgi?id=607492
                  try:
                      name = Gtk.Buildable.get_name(wid)
                  except TypeError:
                      continue
  
                  if name in self.autoWidgets and self.autoWidgets[name] != wid:
                      raise ViewError("Widget '%s' in builder also found in "
                          "glade specification" % name)
  
                  self.autoWidgets[name] = wid
  
          self.__autowidgets_calculated = True
docs: Extract autoWidgets map if needed, out of the glade
          specifications and gtk builder