Bug 167450 [DataBinding] Get rid of bind support factory magic
I finally realized that we don't need that other magic factory. I'll move fillBindSpecDefaults() and the methods it calls (createConverter, createValidator etc) to a new class DefaultBindSpec. Clients who want default validators and converters created for them just create a DefaultBindSpec as opposed to a (rather empty) BindSpec. I will also move the early type checking into DefaultBindSpec to make it optional as well.
bundles/org.eclipse.jface.databinding/src/org/eclipse/jface/databinding/viewers/OrderedTreeNode.java
}
		
		if (!shouldHavePendingNode && hasPendingNode) {
			hasPendingNode = shouldHavePendingNode;
			contentProvider.remove(element, Collections
					.singletonList(contentProvider.getPendingNode()), true);
		}
		updateStale();
	}
	/**
	 * @return
	 */
	public Object getElement() {
		return element;
	}
	/**
	 * 
	 */
	public void prefetch() {
		List children = getChildren();
		if (!children.isEmpty()) {
			contentProvider.add(element, children);
		} else {
			
			
			contentProvider.getViewer().refresh(element);
		}
	}
}