Get Worflow Initiator email Id

Hi there,

I have create workflow in which approver can reject the request. When approver reject the request, the mail as to trigger to initiator.

Using below code I can achieve it - Working

 manager = userManagerFactory.createUserManager(session);
        if (manager.hasAuthorizable(groupname)) {
            Authorizable id = manager.get(groupname);
            log.info("***** name ******" + id.getName());
            if (id.isUser()) {
                user = (User) id;
                userProfile = user.getProfile();
                if (userProfile.getPrimaryMail() != null&& userProfile.getPrimaryMail().length() != 0) {
                    initiatorMail = userProfile.getPrimaryMail();
                    log.info("*** User primary mail id : ***"+ initiatorMail);
                }
            }

But UserManage, Authorizable ,Profile classes are shown as deprecated. 

I am using AEM6.0. Can any one suggest me how to achieve this in AEM6.0 without deprecated class.

In other way what is the alternate class to get the user email in workflow. 

Thanks

Nanda