public final boolean isRegistered(String name) { return !name.startsWith("x-") && !name.startsWith("X-");
public final boolean isRegistered () { return (!canonicalName.startsWith ("x-") && !canonicalName.startsWith ("X-"));
	public final boolean isRegistered(String name) {		return !name.startsWith("x-") && !name.startsWith("X-");	}