code: func (srv *Instance) Stats() agents.ServerStats {
  	return agents.ServerStats{
  		Total:      srv.getPromCtrValue(totalCtr),
  		Valid:      srv.getPromCtrValue(validatedCtr),
  		Invalid:    srv.getPromCtrValue(unvalidatedCtr),
  		Passed:     srv.getPromCtrValue(passedCtr),
  		Filtered:   srv.getPromCtrValue(filteredCtr),
  		Replies:    srv.getPromCtrValue(repliesCtr),
  		TTLExpired: srv.getPromCtrValue(ttlExpiredCtr),
  	}
  }
docs: // Stats expose server statistics