ns.addMapping("xmlns", "http://a", node1);
assertEquals(node1, ns.getMapping("xmlns"));
ns.push();
ns.addMapping("xmlns", "http://a", node1);
assertEquals(null, ns.getMapping("xmlns"));
ns.push();
ns.addMapping("xmlns", "http://b", node1);
assertEquals(node1, ns.getMapping("xmlns"));
}
@org.junit.Test