func (e *DownloadDirPartialError) Is(err error) bool { return err == fs.ErrNotExist }

// lockVersion locks a file within the module cache that guards the downloading
// and extraction of the zipfile for the given module version.
func lockVersion(ctx context.Context, mod module.Version) (unlock func(), err error) {
	path, err := CachePath(ctx, mod, "lock")
	if err != nil {
		return nil, err

	// DownloadZip uses the same lockfile as Download.
	// Invoke DownloadZip before locking the file.
	zipfile, err := DownloadZip(ctx, mod)
	if err != nil {
		return "", err
	}

	unlock, err := lockVersion(ctx, mod)
	if err != nil {
		return "", err
	}
	defer unlock()

	ctx, span = trace.StartSpan(ctx, "unzip "+zipfile)
	defer span.Done()

	container "k8s.io/kubernetes/pkg/kubelet/container"
)

// MockVersion is a mock of Version interface.
type MockVersion struct {
	ctrl     *gomock.Controller
	recorder *MockVersionMockRecorder
}

// MockVersionMockRecorder is the mock recorder for MockVersion.
type MockVersionMockRecorder struct {
	mock *MockVersion
}

// NewMockVersion creates a new mock instance.