gistfile1.java

@WebMethod(
   action = "ServiceName",
   operationName = "operation")     
public MyResponse operation(  
        @WebParam(
           mode = WebParam.Mode.INOUT, 
           header = true, 
           name = "JaxbHeader", 
           targetNamespace = "http://www.elucidator.nl/header/v1.0")
         final Holder headerHolder,         
         @WebParam(
            mode = WebParam.Mode.IN, 
            name = "data") 
            final JaxbPayload payload) 
      throws MyServiceException { 
    //SNIP 
    if (headerHolder.value.flag) { 
      headerHolder.value.field = "SomeValue"; 
      return responseObject; 
    }
    //SNIP SOME MORE