Represents the status and other related information for a challenge that is - or
was - available to a player.
A challenge is a bonus objective, generally tacked onto Quests or Activities,
that provide additional variations on play.
The hash code for this object. [...]
The progress - including completion status - of the active challenge.
read / write
A representation of the runtime type of the object.
Invoked when a non-existent method or property is accessed. [...]
Returns a string representation of this object.