Bug 169637 [DataBinding] Multiple validation statuses per binding
bundles/org.eclipse.core.databinding/src/org/eclipse/core/databinding/ListBinding.java
private UpdateListStrategy targetToModel;
	private UpdateListStrategy modelToTarget;
	private IObservableValue validationStatusObservable;
	private boolean updatingTarget;
	private boolean updatingModel;
	private IListChangeListener targetChangeListener = new IListChangeListener() {
		public void handleListChange(ListChangeEvent event) {
			if (!updatingTarget) {
				doUpdate((IObservableList) getTarget(),
						(IObservableList) getModel(), event.diff,
						targetToModel, false, false);
			}
		}
	};
	private IListChangeListener modelChangeListener = new IListChangeListener() {