How to make adsLog.DebugEnabled() to be true.so I can see the debug info

func (s *DiscoveryServer) pushRoute(con *XdsConnection, push *model.PushContext, version string) error {
	pushStart := time.Now()
	rawRoutes := s.generateRawRoutes(con, push)
	if s.DebugConfigs {
		for _, r := range rawRoutes {
			con.RouteConfigs[r.Name] = r
			if adsLog.DebugEnabled() {
				resp, _ := protomarshal.ToJSONWithIndent(r, " ")
				adsLog.Debugf("RDS: Adding route:%s for node:%v", resp, con.node.ID)
			}
		}
	}

	response := routeDiscoveryResponse(rawRoutes, version, push.Version)
	err := con.send(response)
	rdsPushTime.Record(time.Since(pushStart).Seconds())
	if err != nil {
		adsLog.Warnf("RDS: Send failure for node:%v: %v", con.node.ID, err)
		recordSendError(rdsSendErrPushes, err)
		return err
	}
	rdsPushes.Increment()

	adsLog.Infof("RDS: PUSH for node:%s routes:%d", con.node.ID, len(rawRoutes))
	return nil
}
if adsLog.DebugEnabled() {
				resp, _ := protomarshal.ToJSONWithIndent(r, " ")
				adsLog.Debugf("RDS: Adding route:%s for node:%v", resp, con.node.ID)
			}

I want to debug RDS: Adding route: hrere,how to make adsLog.DebugEnabled() to be true.so I can see the debug info.