[Axis2] Converting from XmlObject to OMElement

[Rubén Naranjo Izquierdo]

   Hi all,

   I need to insert some information in SOAP Header field. In fact I need to 
insert a class created by wsdl2java which extends 
org.apache.xmlbeans.XmlObject. To do so I try the next on my PortType's stub:

(...)
SOAPHeaderBlock headBlock = envelope.getHeader().addHeaderBlock(...);
headBlock.addChild(toOM(myType))
(...)

private OMElement toOM(XmlObject param) {
        StAXOMBuilder builder = new 
StAXOMBuilder(OMAbstractFactory.getOMFactory(), 
new StreamWrapper(param.newXMLStreamReader()));
        OMElement documentElement = builder.getDocumentElement();
        ((OMNodeEx) documentElement).setParent(null);
        return documentElement;
}

   Depending on the class I use when calling "toOM", I get a 
"java.lang.IllegalStateException", an "org.apache.axis2.om.OMException", or 
just works fine (as you may suppose, it works fine with the classes I don't 
need)

   What am I doing wrong? Is that the correct way to convert from XmlObject to 
OMElement?

   Thank you in advance,

     Rubén