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
}
	/**
	 * Disposes this node and removes all remaining children.
	 */
	public void dispose() {
		if (children != null) {
			if (listeningToChildren) {
				contentProvider.remove(element, children, true);
				children.removeListChangeListener(this);
				children.removeStaleListener(this);
			}
			children.dispose();
			children = null;
			if (listeningToChildren && isStale) {
				contentProvider.changeStale(-1);
			}
		}
	}
	/**
	 * @return
	 */
	public boolean isDisposed() {
		return children == null;
	}
	/**
	 * Returns one representative parent, or null if this node is unparented.
	 * Use getParents() to get the complete set of known parents.
	 * 
	 * @return
	 */