code: public String performLcdsHeartBeat(long accountId, String sessionToken, int heartBeatCount, Date date) {
          return client.sendRpcAndWait(SERVICE, "performLCDSHeartBeat", accountId, sessionToken, heartBeatCount, format.format(date));
      }
docs: Perform a heartbeat
  @param accountId The user id
  @param sessionToken The token for the current session
  @param heartBeatCount The amount of heartbeats that have been sent
  @param date The time of the heart beat
  @return A string