javax.xml.soap.write-xml-declaration ignored in JBoss EAP

Issue

• We set the system property javax.xml.soap.write-xml-declaration but EAP ignores it. No prolog is included in the response. How do I force the xml prolog on EAP ?

• We are setting the property like the below code,

public boolean handleMessage(SOAPMessageContext soapMessageContext) 
        { 
                Boolean outboundProperty = (Boolean) soapMessageContext 
                        .get(MessageContext.MESSAGE_OUTBOUND_PROPERTY); 

                SOAPMessage message = soapMessageContext.getMessage(); 
                if (outboundProperty.booleanValue()) 
                { 
                        try 
                        { 
                                message.setProperty(SOAPMessage.WRITE_XML_DECLARATION, "true"); 
                                soapMessageContext.setMessage(message); 
                                soapMessageContext.getMessage().writeTo(System.out); 
                        } 

                        catch (Exception e) 
                        { 

                        } 
                } 
                return true; 
        }