code: def get_grimoire_fields(self, creation_date, item_name):
          
  
          grimoire_date = None
          try:
              grimoire_date = str_to_datetime(creation_date).isoformat()
          except Exception as ex:
              pass
  
          name = "is_" + self.get_connector_name() + "_" + item_name
  
          return {
              "grimoire_creation_date": grimoire_date,
              name: 1
          }
docs: Return common grimoire fields for all data sources