Bug 126839 [DataBinding] IObservable refactoring
bundles/org.eclipse.jface.databinding/src/org/eclipse/jface/internal/databinding/beans/CopyOfJavaBeanUpdatableCollection.java
private boolean updating = false;
	private PropertyDescriptor descriptor;
	private Class elementType=null;
	
	private IUpdatableValue objectUpdatable;
	
	/**