@Override
                public void run() {
                    VRTARSceneNavigator nav = navigatorWeakReference.get();
                    if (nav != null) {
                        nav.mGLInitialized = true;
                        nav.setViroContext();
                    }
                }
ARSceneNavigator manages the various AR scenes that a Viro App can navigate between.
android/viro_bridge/src/main/java/com/viromedia/bridge/component/VRTARSceneNavigator.java