[Net-IMAP-Server] way for mailbox to tell it has been selected?

[Richard Russo]

Is there a way for a Mailbox to tell when it has been selected?  I see the close method, to let the Mailbox know when it no longer selected, but when the Mailbox is selected there is no open, the permanentflags looks like the best place to hook into.

I'm writing an IMAP Proxy backend, so it's helpful to know when I need to select something.