docs: public void makeSceneSelectable(GVRScene scene) {
          if (this.scene == scene) {
              //do nothing return
              return;
          }
  
          //cleanup on the currently set scene if there is one
          if (this.scene != null) {
              //false to remove
              updateCursorsInScene(this.scene, false);
          }
  
          this.scene = scene;
  
          if (scene == null) {
              return;
          }
          // process the new scene
          for (GVRSceneObject object : scene.getSceneObjects()) {
              addSelectableObject(object);
          }
          //true to add
          updateCursorsInScene(scene, true);
      }