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
isStale = willBeStale;
			contentProvider.changeStale(isStale ? 1 : -1);
		}
	}
	/**
	 * @return
	 */
	public boolean isStale() {
		return isStale;
	}
	/**
	 * Returns true if the viewer should show a plus sign for expanding this
	 * node.
	 * 
	 * @return
	 */
	public boolean shouldShowPlus() {
		if (children == null) {
			
			
			
			
			
			return true;
		}
		if (!listeningToChildren && !prefetchEnqueued) {
			prefetchEnqueued = true;
			contentProvider.enqueuePrefetch(this);
		}
		return !listeningToChildren || hasPendingNode || !children.isEmpty();