public void Dispose()
{
_isSpeechEnabledSubscription.Dispose();
IsSpeechEnabled.Dispose();
}
public SettingsPageViewModel(ApplicationSettingsService settingsService)
{
IsSpeechEnabled = settingsService.IsSpeechEnabledObservable.ToReactiveProperty();
_isSpeechEnabledSubscription = IsSpeechEnabled.Subscribe(isSpeechEnabled => settingsService.IsSpeechEnabled = isSpeechEnabled);
}