code: public void setHeartbeatTime(int newHeartbeatTime) {
  		if (newHeartbeatTime > 0) {
  			if (newHeartbeatTime > heartbeatMaxTime
  					|| newHeartbeatTime < heartbeatMinTime) {
  				raiseOrtcEvent(EventEnum.OnException, this, new Exception(
  						"Heartbeat time is out of limits - Min: "
  								+ heartbeatMinTime + " | Max: "
  								+ heartbeatMaxTime));
  			} else {
  				heartbeatTime = newHeartbeatTime;
  			}
  		} else {
  			raiseOrtcEvent(EventEnum.OnException, this, new Exception(
  					"Invalid heartbeat time " + newHeartbeatTime));
  		}
  	}
docs: Set heartbeat fails. Defines how many times can the client fail the heartbeat.
  
  @param newHeartbeatTime