code: def _page_update(self, event):
          
          try:
              if event.schema == 'wikipage':
                  self._update_index()
  
          except Exception as e:
              self.log("Page creation notification error: ", event, e,
                       type(e), lvl=error)
docs: Checks if the newly created object is a wikipage..
          If so, rerenders the automatic index.
  
          :param event: objectchange or objectcreation event