@Test
public void testGetNamespaceURI_XmlType() {

	JsonXMLRootProvider provider = new JsonXMLRootProvider();
	Assert.assertEquals(XMLConstants.NULL_NS_URI,
			provider.getNamespaceURI(SampleType.class.getAnnotation(XmlType.class), null));
	Assert.assertEquals("urn:staxon:jaxb:test",
			provider.getNamespaceURI(SampleTypeWithNamespace.class.getAnnotation(XmlType.class), null));
}