//as its only child
ArrayList<IAdaptable> input = new ArrayList<IAdaptable>();
input.add(root);
// createMessageArea(composite);
selectionGroup = new CheckboxTreeAndListGroup(container, input,
getResourceProvider(IResource.FOLDER | IResource.PROJECT
| IResource.ROOT), WorkbenchLabelProvider
.getDecoratingWorkbenchLabelProvider(),
getResourceProvider(IResource.FILE), WorkbenchLabelProvider
.getDecoratingWorkbenchLabelProvider(), SWT.NONE,