@Override
    protected SOAPMessage modifySOAPMessage(SOAPMessage soapMessage) throws SOAPException {
      SOAPFactory soapFactory = SOAPFactory.newInstance();
      String uri = "http://schemas.xmlsoap.org/ws/2002/12/secext";
      String prefix = "wss";
      SOAPElement security = soapFactory.createElement("Security", prefix, uri);
      SOAPElement usernameToken = soapFactory.createElement("UsernameToken", prefix, uri);
      usernameToken.addChildElement("Username", prefix, uri).setValue("test");
      usernameToken.addChildElement("Password", prefix, uri).setValue("test");
      security.addChildElement(usernameToken);
      soapMessage.getSOAPHeader().addChildElement(security);
      return soapMessage;
    }
Enabled via {@link feign.Feign.Builder#dismiss404()}
soap-jakarta/src/test/java/feign/soap/SOAPCodecTest.java