code: def expire_leaderboard_at_for(self, leaderboard_name, timestamp):
          '''
          Expire the given leaderboard at a specific UNIX timestamp. Do not use this with
          leaderboards that utilize member data as there is no facility to cascade the
          expiration out to the keys for the member data.
  
          @param leaderboard_name [String] Name of the leaderboard.
          @param timestamp [int] UNIX timestamp at which the leaderboard will be expired.
          '''
          pipeline = self.redis_connection.pipeline()
          pipeline.expireat(leaderboard_name, timestamp)
          pipeline.expireat(
              self._ties_leaderboard_key(leaderboard_name), timestamp)
          pipeline.expireat(self._member_data_key(leaderboard_name), timestamp)
          pipeline.execute(f expire_leaderboard_at_for(self, leaderboard_name, timestamp):
          '''
          Expire the given leaderboard at a specific UNIX timestamp. Do not use this with
          leaderboards that utilize member data as there is no facility to cascade the
          expiration out to the keys for the member data.
  
          @param leaderboard_name [String] Name of the leaderboard.
          @param timestamp [int] UNIX timestamp at which the leaderboard will be expired.
          '''
          pipeline = self.redis_connection.pipeline()
          pipeline.expireat(leaderboard_name, timestamp)
          pipeline.expireat(
              self._ties_leaderboard_key(leaderboard_name), timestamp)
          pipeline.expireat(self._member_data_key(leaderboard_name), timestamp)
          pipeline.execute()
docs: Expire the given leaderboard at a specific UNIX timestamp. Do not use this with
          leaderboards that utilize member data as there is no facility to cascade the
          expiration out to the keys for the member data.
  
          @param leaderboard_name [String] Name of the leaderboard.
          @param timestamp [int] UNIX timestamp at which the leaderboard will be expired.