paramMetaData.setInHeader(true);
paramMetaData.setIndex(1);
opMetaData.addParameter(paramMetaData);
EndpointInvocation epInv = new EndpointInvocation(opMetaData);
binding.unbindResponseMessage(opMetaData, resMessage, epInv, null);
assertEquals("Hello World!", epInv.getReturnValue());
Object headerValue = epInv.getResponseParamValue(xmlName);
assertEquals("OUT header message", headerValue);
}