public Boolean isAndroidOngoing() {
        return options.optBoolean("androidOngoing", false);
    }
Set whether this is an "ongoing" notification. Ongoing notifications cannot be dismissed by the user
on locked devices, or by notification listeners, and some notifications (call, device management, media)
cannot be dismissed on unlocked devices, so your application or service must take care of canceling them.
They are typically used to indicate a background task that the user is actively engaged with
(e.g., playing music) or is pending in some way and therefore occupying the device
(e.g., a file download, sync operation, active network connection).

Defaults to false if not set.
src/android/Options.java