*/
public void testInputStreamDS() throws Exception {
SOAPBody soapBody = soapEnvelope.getBody();
OMFactory factory = soapBody.getOMFactory();
OMSourcedElement omse = factory.createOMElement(isds1, localName, ns);
soapBody.addChild(omse);
OMNode firstChild = soapBody.getFirstOMChild();
assertTrue("Expected OMSourcedElement child", firstChild instanceof OMSourcedElement);
OMSourcedElement child = (OMSourcedElement) firstChild;
assertTrue("OMSourcedElement is expanded. This is unexpected", !child.isExpanded());
assertTrue("OMSourcedElement should be backed by a InputStreamDataSource",