func getTransitionedObjectReader(ctx context.Context, bucket, object string, rs *HTTPRangeSpec, h http.Header, oi ObjectInfo, opts ObjectOptions) (gr *GetObjectReader, err error) {
	tgtClient, err := globalTierConfigMgr.getDriver(ctx, oi.TransitionedObject.Tier)
	if err != nil {
		return nil, fmt.Errorf("transition storage class not configured: %w", err)
	}

	fn, off, length, err := NewGetObjectReader(rs, oi, opts, h)
	if err != nil {

}

// TransitionObject - transition object content to target tier.
func (er erasureObjects) TransitionObject(ctx context.Context, bucket, object string, opts ObjectOptions) error {
	tgtClient, err := globalTierConfigMgr.getDriver(ctx, opts.Transition.Tier)
	if err != nil {
		return err
	}

	if !opts.NoLock {
		// Acquire write lock before starting to transition the object.
		lk := er.NewNSLock(bucket, object)

        PluginDescriptor content = nonNull(request.getContent(), "content");
        Path path = request.getPath();
        OutputStream outputStream = request.getOutputStream();
        Writer writer = request.getWriter();
        if (writer == null && outputStream == null && path == null) {
            throw new IllegalArgumentException("writer, outputStream or path must be non null");
        }
        try {