public NVASettingsButton(IEventAggregator eventAggregator, INvtSession session, AnalyticsEngine engine, AnalyticsEngineControl control, Account currentAccount, IVideoInfo videoInfo = null)
			: base(eventAggregator, session, currentAccount, engine, control, videoInfo) {
			Init();
		}
		public ExtendedControl(AnalyticsEngineControl cntrl, AnalyticsState state) {
			this.cntrl = cntrl;
			this.state = state;
		}
		public NVAButtonBase(IEventAggregator eventAggregator, INvtSession session, Account currentAccount, AnalyticsEngine engine, AnalyticsEngineControl control, IVideoInfo videoInfo = null)
            : base(eventAggregator, session, currentAccount) {
            this.engine = engine;
            this.control = control;
            this.videoInfo = videoInfo;
	    }