DOM3 XPath and Default Namespace

XPath expression //div with a namespace resolver that returns a namespace URL...

<div xmlns=""/>

<div xmlns="http://www.w3.org/1999/xhtml"/>

<h:div xmlns:h="http://www.w3.org/1999/xhtml"/>

<div xmlns="http://myns.test/"/>

<h:div xmlns:h="http://myns.test/"/>