Document doc = message.getSOAPPart();
Element orgElement = doc.createElementNS("urn:ns", "ns:test");
orgElement.appendChild(doc.createElementNS(null, "child1"));
orgElement.appendChild(doc.createElementNS(null, "child2"));
orgElement.appendChild(doc.createElementNS(null, "child3"));
header.appendChild(orgElement);
SOAPElement element = (SOAPElement)header.getChildElements().next();
assertTrue(element instanceof SOAPHeaderElement);
assertEquals(3, element.getChildNodes().getLength());
}