code: def get_query(self, evolutionary=False):
          
  
          if not evolutionary:
              interval = None
              offset = None
          else:
              interval = self.interval
              offset = self.offset
              if not interval:
                  raise RuntimeError("Evolutionary query without an interval.")
  
          query = ElasticQuery.get_agg(field=self.FIELD_COUNT,
                                       date_field=self.FIELD_DATE,
                                       start=self.start, end=self.end,
                                       filters=self.esfilters,
                                       agg_type=self.AGG_TYPE,
                                       interval=interval,
                                       offset=offset)
  
          logger.debug("Metric: '%s' (%s); Query: %s",
                       self.name, self.id, query)
          return query
docs: Basic query to get the metric values
  
          :param evolutionary: if True the metric values time series is returned. If False the aggregated metric value.
          :return: the DSL query to be sent to Elasticsearch