public void setAutoFocusEnabled(boolean enabled) {
        mAutoFocusEnabled = enabled;
        if (mGLInitialized) {
            ((ViroViewARCore)mViroView).setCameraAutoFocusEnabled(mAutoFocusEnabled);
        } else {
            mNeedsAutoFocusToggle = true;
        }
    }
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