code: func (rc *resourceMetricCollector) Describe(ch chan<- *prometheus.Desc) {
  	rc.errors.Describe(ch)
  	for _, metric := range rc.config.NodeMetrics {
  		ch <- metric.desc()
  	}
  	for _, metric := range rc.config.ContainerMetrics {
  		ch <- metric.desc()
  	}
  }
docs: // Describe implements prometheus.Collector