code: private void fireTangoDataReadyEvent(TangoDataReady tangoDataReady, EventData eventData) {
          TangoDataReadyEvent data_ready_event = new TangoDataReadyEvent(tangoDataReady, eventData);
          // Notifying those that are interested in this event
          ArrayList<EventListener> listeners = event_listeners.getListeners(ITangoDataReadyListener.class);
          for (EventListener eventListener : listeners) {
              ((ITangoDataReadyListener) eventListener).data_ready(data_ready_event);
          }
      }
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