Thank you. It worked.
I initially was getting the following class Exception when I tried to write the document out to an output stream using an XMLWriter class from a proprietary source: 
Exception java.lang.ClassCastException: org.apache.crimson.tree.XmlDocument
And after several hours of tracking down the conflict(some jar file had this class hidden away some where) , and looking at alternative way to write out the document, I finally did the following:
org.w3c.dom.Document doc = (org.w3c.dom.Document)response.getFirstXMLObject().getDocument();
org.apache.xml.serialize.XMLSerializer serializer = new org.apache.xml.serialize.XMLSerializer();
serializer.setOutputByteStream(System.out);
serializer.serialize(doc);
And, Voila, the response document displayed to the screen. 
Most Excellent.
Thanks for the input. 
#webMethods#API-Management#webMethods-Tamino-XML-Server-APIs