labelValues := make([]string, 0, len(v.Labels))
			for _, k := range desc.VariableLabels {
				labelValues = append(labelValues, v.Labels[k])
			}
			metrics = append(metrics,
				prometheus.MustNewConstMetric(promDesc, desc.Type.toProm(), v.Value,
					labelValues...))
		}
	}
	return metrics
}

// Set - sets a metric value along with any provided labels. It is used only
// with Gauge and Counter metrics.

			if metric.Histogram == nil {
				return true
			}
			for k, v := range metric.Histogram {
				labels = append(labels, metric.HistogramBucketLabel)
				values = append(values, k)
				ch <- prometheus.MustNewConstMetric(
					prometheus.NewDesc(
						prometheus.BuildFQName(string(metric.Description.Namespace),
							string(metric.Description.Subsystem),
							string(metric.Description.Name)),
						metric.Description.Help,