Dynamics AX AIF. Set Message headers in Java

    SalesOrderServiceClient salesOrderServiceClient = new SalesOrderServiceClient();
    System.ServiceModel.OperationContextScope operContextScope;
    operContextScope = new System.ServiceModel.OperationContextScope(salesOrderServiceClient.InnerChannel);
    //"OperationContextScope" -> analog in Java?
    //"IClientChannel" -> how I can obtain it from proxy or service class?
    using(operContextScope)
    {
        System.ServiceModel.OperationContext.Current.OutgoingMessageHeaders.MessageId = new System.Xml.UniqueId(Guid.NewGuid());
    }

    ((BindingProvider) proxy).getRequestContext().put(BindingProvider.USERNAME_PROPERTY, usr);
    ((BindingProvider) proxy).getRequestContext().put(BindingProvider.PASSWORD_PROPERTY, pwd);