code: func NewConnectionsStatsHandler(sub Subsystem, vec *prometheus.GaugeVec) *ConnectionsStatsHandler {
  	return &ConnectionsStatsHandler{
  		baseStatsHandler: baseStatsHandler{
  			subsystem: sub,
  			collector: vec,
  		},
  		vec: vec,
  	}
  }
docs: // NewConnectionsStatsHandler ...