Bug 127861 [DataBinding] Mark API provisional
bundles/org.eclipse.jface.databinding/src/org/eclipse/jface/internal/databinding/NestedUpdatableCollection.java
private boolean updating = false;
	private IChangeListener innerChangeListener = new IChangeListener() {
		public void handleChange(ChangeEvent changeEvent) {
			if (!updating) {
				ChangeEvent nestedEvent = fireChangeEvent(changeEvent.getChangeType(), changeEvent
						.getOldValue(), changeEvent.getNewValue(), changeEvent.getParent(), changeEvent.getPosition());
				if(nestedEvent.getVeto()) {
					changeEvent.setVeto(true);
				}
			}
		}
	};
	private Object currentOuterValue;
	private Object feature;
	private IUpdatableCollection innerUpdatableCollection;
	private IDataBindingContext databindingContext;