code: def _submit_gauges_from_histogram(
          self, name, metric, send_histograms_buckets=True, custom_tags=None, hostname=None
      ):
          
          if custom_tags is None:
              custom_tags = []
          # histograms do not have a value attribute
          val = getattr(metric, self.METRIC_TYPES[4]).sample_count
          if self._is_value_valid(val):
              self._submit_gauge("{}.count".format(name), val, metric, custom_tags)
          else:
              self.log.debug("Metric value is not supported for metric {}.count.".format(name))
          val = getattr(metric, self.METRIC_TYPES[4]).sample_sum
          if self._is_value_valid(val):
              self._submit_gauge("{}.sum".format(name), val, metric, custom_tags)
          else:
              self.log.debug("Metric value is not supported for metric {}.sum.".format(name))
          if send_histograms_buckets:
              for bucket in getattr(metric, self.METRIC_TYPES[4]).bucket:
                  val = bucket.cumulative_count
                  limit = bucket.upper_bound
                  if self._is_value_valid(val):
                      self._submit_gauge(
                          "{}.count".format(name),
                          val,
                          metric,
                          custom_tags=custom_tags + ["upper_bound:{}".format(limit)],
                          hostname=hostname,
                      )
                  else:
                      self.log.debug("Metric value is not supported for metric {}.count.".format(name))
docs: Extracts metrics from a prometheus histogram and sends them as gauges