SOAPEnvelope envelope = sp.getEnvelope();
SOAPBody bdy = envelope.getBody();
SOAPBodyElement sbe = bdy.addBodyElement(envelope.createName(rpcMethodName, NS_PREFIX, NS_URI));
// Add a some child elements
sbe.addChildElement(envelope.createName("String_1")).addTextNode("Some hello");
MimeHeaders headers = msg.getMimeHeaders();
headers.addHeader("SOAPAction", "/foo/bar");
headers.addHeader("testme", "testme");
headers.addHeader("testme", "testme2");