public void Start()
{
if (!_live.CompareAndSet(false, true))
{
return;
}
_credentialsFactory = _client.GetCredentialsFactory();
//start Heartbeat
_heartbeatToken = new CancellationTokenSource();
_client.GetClientExecutionService().ScheduleWithFixedDelay(Heartbeat,
(long)_heartbeatInterval.TotalMilliseconds,
(long)_heartbeatInterval.TotalMilliseconds,
TimeUnit.Milliseconds,
_heartbeatToken.Token);
}