void allowHashing(boolean allowed) {
            this.hashingAllowed = allowed
        }
    }

    static class AllowingStat implements Stat {

        private final Stat delegate
        private boolean statAllowed

        AllowingStat(Stat delegate) {
            this.delegate = delegate
        }

        @Override
        int getUnixMode(File f) throws FileException {

        try {
            return stat.getUnixMode(f);
        } catch (Exception e) {
            throw new FileException(String.format("Could not get file mode for '%s'.", f), e);
        }
    }

    @Override
    public FileMetadata stat(File f) throws FileException {
        statisticsCollector.reportFileStated();
        return metadata.stat(f);
    }

    @Override

	"testing"
)

func TestReadDriveStats(t *testing.T) {
	if runtime.GOOS == "windows" {
		t.Skip("skipping this test in windows")
	}
	testCases := []struct {
		stat            string
		expectedIOStats IOStats
		expectErr       bool
	}{
		{
			stat: "1432553   420084 66247626  2398227  7077314  8720147 157049224  7469810        0  7580552  9869354    46037        0 41695120     1315        0        0",
			expectedIOStats: IOStats{

      metadata->time_storage_class_updated().time_since_epoch().count();
  stat->base.is_directory = object.back() == '/';
  TF_VLog(1,
          "Stat of: gs://%s/%s --  length: %u generation: %u; mtime_nsec: %u;",
          bucket.c_str(), object.c_str(), stat->base.length,
          stat->generation_number, stat->base.mtime_nsec);
  return TF_SetStatus(status, TF_OK, "");
}

// TODO(vnvo2409): Implement later

	return Timeval{Sec: sec, Usec: int32(usec)}
}

//sys	Fstat(fd int, stat *Stat_t) (err error) = SYS_fstat64
//sys	Fstatfs(fd int, stat *Statfs_t) (err error) = SYS_fstatfs64
//sysnb	Gettimeofday(tp *Timeval) (err error)
//sys	Lstat(path string, stat *Stat_t) (err error) = SYS_lstat64
//sys	Stat(path string, stat *Stat_t) (err error) = SYS_stat64
//sys	Statfs(path string, stat *Statfs_t) (err error) = SYS_statfs64

	return Timeval{Sec: sec, Usec: int32(usec)}
}

//sys	Fstat(fd int, stat *Stat_t) (err error)
//sys	Fstatfs(fd int, stat *Statfs_t) (err error)
//sysnb	Gettimeofday(tp *Timeval) (err error)
//sys	Lstat(path string, stat *Stat_t) (err error)
//sys	Stat(path string, stat *Stat_t) (err error)
//sys	Statfs(path string, stat *Statfs_t) (err error)
//sys	fstatat(fd int, path string, stat *Stat_t, flags int) (err error)

	for i := range stats {
		stat := &stats[i]
		name := ""
		if int(stat.typ) >= len(specs) {
			name = fmt.Sprintf("<unknown (%d)>", stat.typ)
		} else {
			name = specs[stat.typ].Name
		}
		bytesPct := float64(stat.bytes) / float64(cr.bytesRead) * 100
		countPct := float64(stat.count) / float64(eventsRead) * 100
		fmt.Fprintf(w, "%s\t%d\t%.2f%%\t%d\t%.2f%%\n", name, stat.bytes, bytesPct, stat.count, countPct)
	}

	for _, sz := range []int64{1 << 20, 2 << 20, 3 << 20} {
		err = out.Mmap(uint64(sz))
		if err != nil {
			t.Fatalf("Mmap failed: %v", err)
		}
		stat, err := os.Stat(filename)
		if err != nil {
			t.Fatalf("Stat failed: %v", err)
		}
		if got := stat.Size(); got != sz {
			t.Errorf("unexpected file size: got %d, want %d", got, sz)
		}
		// The number of blocks must be enough for the requested size.

)

func loadProcStatMetrics(ctx context.Context, stat procfs.ProcStat, m MetricValues) {
	if stat.CPUTime() > 0 {
		m.Set(processCPUTotalSeconds, float64(stat.CPUTime()))
	}

	if stat.ResidentMemory() > 0 {
		m.Set(processResidentMemoryBytes, float64(stat.ResidentMemory()))
	}

	if stat.VirtualMemory() > 0 {
		m.Set(processVirtualMemoryBytes, float64(stat.VirtualMemory()))
	}

	startTime, err := stat.StartTime()

}

type stats map[Cookie]*Stat

func (st stats) getLocked(c Cookie) *Stat {
	s, ok := st[c]
	if !ok {
		s = &Stat{Family: c.Family(), Type: c.Type(), Protocol: c.Protocol()}
		st[c] = s
	}
	return s
}

// A FilterType represents a filter type.
type FilterType int