String[] propertyNames = JFacesHelper.getViewerProperties(viewer);
if (target instanceof AbstractTreeViewer) {
IContentProvider contentProvider = (IContentProvider) viewer.getContentProvider();
if (contentProvider instanceof ObservableTreeContentProvider) {
ObservableTreeContentProvider xwtContentProvider = (ObservableTreeContentProvider) contentProvider;
xwtContentProvider.updateContext(viewer, value);
}
if (contentProvider instanceof ObservableTreeContentProvider) {
ObservableTreeContentProvider listContentProvider = (ObservableTreeContentProvider) contentProvider;
viewer.setLabelProvider(new ObservableMapLabelProvider(
viewer, listContentProvider.getKnownElements(),