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/UnorderedTreeNode.java
}
        
        
        if (!shouldHavePendingNode && hasPendingNode) {
            hasPendingNode = shouldHavePendingNode;
            contentProvider.remove(treePath, Collections.singleton(contentProvider.getPendingNode()), true);
        }
        
        updateStale();
    }
    /**
     * @return
     */
    public Object getElement() {
        return treePath;
    }
    /**
     * 
     */
    public void prefetch() {
        Set children = getChildren();
        if (!children.isEmpty()) {
            contentProvider.add(treePath, children);
        } else {
            
            contentProvider.getViewer().refresh(treePath);
        }
    }
}