Holds a session to every acr value required, and says what the sign-in screen must demand where it falls short.
the values, each required
the sign-on session (its acr, amr, events)
acr
amr
{ met, missing, ask, forceMfa, forceKey } — ask the values to send the sign-in, the strongest first
{ met, missing, ask, forceMfa, forceKey }
ask
Holds a session to every acr value required, and says what the sign-in screen must demand where it falls short.