A client to retrieve Player stats.
public abstract Task<AnnotatedData<PlayerStats>>
asynchronously loads an annotated
for the currently signed-in player and game into a single result.
true, this call will clear any locally-cached data and attempt
to fetch the latest data from the server. This would commonly be used for something
like a user-initiated refresh. Normally, this should be set to
to gain advantages of data caching.