code: def select_unique(self, event_collection, target_property, timeframe=None, timezone=None, interval=None,
                        filters=None, group_by=None, order_by=None, max_age=None, limit=None):
          params = self.get_params(event_collection=event_collection, timeframe=timeframe, timezone=timezone,
                                   interval=interval, filters=filters, group_by=group_by, order_by=order_by,
                                   target_property=target_property, max_age=max_age, limit=limit)
          return self.api.query("select_unique", params)