code: func (c *nfsCollector) updateNFSNetworkStats(ch chan<- prometheus.Metric, s *nfs.Network) {
  	ch <- prometheus.MustNewConstMetric(c.nfsNetReadsDesc, prometheus.CounterValue,
  		float64(s.UDPCount), "udp")
  	ch <- prometheus.MustNewConstMetric(c.nfsNetReadsDesc, prometheus.CounterValue,
  		float64(s.TCPCount), "tcp")
  	ch <- prometheus.MustNewConstMetric(c.nfsNetConnectionsDesc, prometheus.CounterValue,
  		float64(s.TCPConnect))
  }
docs: // updateNFSNetworkStats collects statistics for network packets/connections.