Spring Security SEC-1840: UserMap is deprecated and InMemoryDaoImpl uses it; what to do?

The Alchemist (Migrated from SEC-1840) said:

org.springframework.security.core.userdetails.memory.UserMap is deprecated but org.springframework.security.core.userdetails.memory.InMemoryDaoImpl still uses it.

If I wrote a patch for org.springframework.security.core.userdetails.memory.InMemoryDaoImpl to use a HashMap or whatever, would you guys take it?

My motivation for this is https://issuetracker.springsource.com/browse/STS-1970, where Roo generates code and config that, by default, gives deprecated warnings, which, IMHO, isn't a great idea.

Comment From: rwinch

UserMap no longer exists so I'm marking this as invalid.