Bug 126839 [DataBinding] IObservable refactoring
bundles/org.eclipse.jface.databinding/src/org/eclipse/jface/internal/databinding/Binding.java
protected final DataBindingContext context;
	/**
	 * @param context
	 */
	public Binding(DataBindingContext context) {
		this.context = context;
	}
	
	/**
	 * 
	 */
	abstract public void updateTargetFromModel(ChangeEvent changeEvent);
	/* (non-Javadoc)
	 * @see org.eclipse.jface.internal.provisional.databinding.IBinding#addBindingEventListener(org.eclipse.jface.internal.provisional.databinding.IBindingListener)