private void activateEx() throws Exception {
IType bundleInterface = m_javaProject.findType("com.google.gwt.user.client.ui.ImageBundle");
IType bundleType =
JdtUiUtils.selectType(
DesignerPlugin.getShell(),
new SubtypesScope(bundleInterface),
IJavaElementSearchConstants.CONSIDER_INTERFACES);
if (bundleType != null) {
String bundleClassName = bundleType.getFullyQualifiedName();
ImageBundleContainerInfo.add(m_rootJavaInfo, bundleClassName);
}