current
Get the last MapboxScreenEvent. This will give you the top of the backstack.
This is the last requested event, which may not be shown: a MapboxScreenOperation.REPLACE_TOP or MapboxScreenOperation.PUSH for a key without a registered MapboxScreenFactory is ignored by the MapboxScreenManager but is still returned here.
When restoring a new Session from this event, note that a MapboxScreenOperation.PUSH refers to a screen that was shown on top of another one, and it may not work as the only screen on the back-stack.