protected class PreviewContentProvider extends TreeNodeContentProvider implements DefElementFlagConstants {
protected IModelElement[] treeModel = createTreeModel();
protected IModelElement[] createTreeModel() {
IScriptModel model = DLTKUtils.getDLTKModel();
IScriptProject scriptProj = model.getScriptProject("#__PreviewProject");
IProjectFragment projectFragment = scriptProj.getProjectFragment(scriptProj.getProject().getFolder("src"));
assertNotNull(projectFragment);
IScriptFolder scriptFolder = projectFragment.getScriptFolder("pack.sub");
String[] ns = array("pack", "sub");