cl.delegate = builder
        cl.call()
        return builder.elements[0]
    }

    public static void leftShift(Node parent, Node node) {
        parent.appendChild(parent.ownerDocument.importNode(node, true))
    }

    public static void addFirst(Node parent, Closure cl) {
        DomBuilder builder = new DomBuilder(parent.ownerDocument, null)
        cl.delegate = builder
        cl.call()

                    ModelProblemUtils.toId(groupId, artifactId, version), ModelProblemUtils.toSourceHint(model)));
        }

        Model importModel = null;
        if (workspaceResolver != null) {
            try {
                importModel = workspaceResolver.resolveEffectiveModel(groupId, artifactId, version);
            } catch (UnresolvableModelException e) {

	pkg, err := w.importFrom(fromPath, fromDir, mode)
	if err != nil {
		return nil, err
	}
	return pkg.Package, nil
}

func (w *Walker) import_(name string) (*apiPackage, error) {
	return w.importFrom(name, "", 0)
}

func (w *Walker) importFrom(fromPath, fromDir string, mode types.ImportMode) (*apiPackage, error) {
	name := fromPath