docs: private void disableTalkBack() {
          GVRSceneObject[] sceneObjects = mGvrContext.getMainScene().getWholeSceneObjects();
          for (GVRSceneObject sceneObject : sceneObjects) {
              if (sceneObject instanceof GVRAccessiblityObject)
                  if (((GVRAccessiblityObject) sceneObject).getTalkBack() != null)
                      ((GVRAccessiblityObject) sceneObject).getTalkBack().setActive(false);
  
          }
      }