GridData data = new GridData(GridData.FILL_BOTH);
section.setLayoutData(data);
ITreeContentProvider contentProvider =
new ElementChildrenTreeContentProvider();
ILabelProvider labelProvider = new DeviceHierarchyLabelProvider();
Element document = accessorManager.getDeviceHierarchyDocument().
getRootElement();
displayArea = new Composite(section, SWT.BORDER);
section.setClient(displayArea);