private void fireTangoChangeEvent(TangoChange tangoChange, EventData eventData) {
        TangoChangeEvent change_event = new TangoChangeEvent(tangoChange, eventData);
        ArrayList<EventListener>    listeners = event_listeners.getListeners(ITangoChangeListener.class);
        for (EventListener eventListener : listeners) {
            ((ITangoChangeListener) eventListener).change(change_event);
        }
    }
private void fireTangoChangeEvent ( TangoChange tangoChange , EventData eventData ) { TangoChangeEvent change_event = new TangoChangeEvent ( tangoChange , eventData ) ; ArrayList < EventListener > listeners = event_listeners . getListeners ( ITangoChangeListener . class ) ; for ( EventListener eventListener : listeners ) { ( ( ITangoChangeListener ) eventListener ) . change ( change_event ) ; } }
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