docs: private GaugeMetricFamily fromGauge(List<Map.Entry<MetricName, Gauge>> gaugesWithSameName) {
  		final Map.Entry<MetricName, Gauge> first = gaugesWithSameName.get(0);
  		final MetricName firstName = first.getKey();
  		final GaugeMetricFamily gaugeMetricFamily = new GaugeMetricFamily(firstName.getName(), getHelpMessage(first.getKey(), first.getValue()), first.getKey().getTagKeys());
  		for (Map.Entry<MetricName, Gauge> entry : gaugesWithSameName) {
  			gaugeMetricFamily.addMetric(entry.getKey().getTagValues(), getDoubleFromGauge(entry.getValue()));
  		}
  		return gaugeMetricFamily;
  	}