public void startMonitoringTradeSession(TradeSessionChangeMonitor.Listener listener) {
if (_session == null) {
Log.e(TAG, "Trying to monitor trade session without having a session");
return;
}
_tradeSessionChangeMonitor.startMonitoring(_session.id, listener);
}
public void stopMonitoringTradeSession() {
_tradeSessionChangeMonitor.stopMonitoring();
}