How to update SAP EP IUserAccount SecurityPolicy UME users

Hi,

The below is our current code, which is running successfully to create new test users with

SecurityPolicy to default .

IUserMaint newUser = userfact.newUser(PortalID);
newUser.setFirstName(Firstname);
newUser.setLastName(Lastname);
newUser.setEmail(EmailID);
Locale PortalLang = new Locale("en");
newUser.setLocale(PortalLang);
newUser.save();
newUser.commit();
IUserAccount useracc = UMFactory.getUserAccountFactory().newUserAccount(PortalID,
newUser.getUniqueID());
useracc.setPassword(NewUserPWD);
useracc.save();
useracc.commit();

Now we a have new scenario that while creating new users we need to update the user type to Technical User (Security Policy).

I don't see that property or method is not available to use in the code(setSecurityPolicy

Have referred the below link but the below method is not available to use.

https://archive.sap.com/discussions/thread/1876052#

Eg.

IUserAccount userAccount = accountFactory.getMutableUserAccount(<UNIQUE ID OF USER>);

userAccount.setSecurityPolicy("<SECURITY POLICY>"); //In my case I'm changing it to technical

userAccount.save();

userAccount.commit();

Please help to suggest, how we can update the user type to Technical User using the code.

What are the other ways of achieving this scenario.

Thanks, SMSVikasK