def member_at(self, position, **options):
return self.member_at_in(self.leaderboard_name, position, **options)<EOL>
Retrieve a member at the specified index from the leaderboard.

@param position [int] Position in leaderboard.
@param options [Hash] Options to be used when retrieving the member from the leaderboard.
@return a member from the leaderboard.