You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: weedfs_quota.go
    path of file: ./repos/seaweedfs/weed/mount
    
    the code of the file until where you have to start completion: package mount

import (
	"context"
	"fmt"
	"github.com/seaweedfs/seaweedfs/weed/glog"
	"github.com/seaweedfs/seaweedfs/weed/pb/filer_pb"
	"time"
)

func (wfs *WFS) loopCheckQuota() {

	for {

		time.Sleep(61 * time.Second)

		if wfs.option.Quota <= 0 {
			continue
		}

		err := wfs.WithFilerClient(false, func(client filer_pb.SeaweedFilerClient) error {

			request := &filer_pb.Statisti
    
func (wfs *WFS) loopCheckQuota() {

	for {

		time.Sleep(61 * time.Second)

		if wfs.option.Quota <= 0 {
			continue
		}

		err := wfs.WithFilerClient(false, func(client filer_pb.SeaweedFilerClient) error {

			request := &filer_pb.StatisticsRequest{
				Collection:  wfs.option.Collection,
				Replication: wfs.option.Replication,
				Ttl:         fmt.Sprintf("%ds", wfs.option.TtlSec),
				DiskType:    string(wfs.option.DiskType),
			}

			resp, err := client.Statistics(context.Background(), request)
			if err != nil {
				glog.V(0).Infof("reading quota usage %v: %v", request, err)
				return err
			}
			glog.V(4).Infof("read quota usage: %+v", resp)

			isOverQuota := int64(resp.UsedSize) > wfs.option.Quota
			if isOverQuota && !wfs.IsOverQuota {
				glog.Warningf("Quota Exceeded! quota:%d used:%d", wfs.option.Quota, resp.UsedSize)
			} else if !isOverQuota && wfs.IsOverQuota {
				glog.Warningf("Within quota limit! quota:%d used:%d", wfs.option.Quota, resp.UsedSize)
			}
			wfs.IsOverQuota = isOverQuota

			return nil
		})

		if err != nil {
			glog.Warningf("read quota usage: %v", err)
		}

	}

}