code: public void setControllers(
        @Nullable DraweeController controller,
        @Nullable DraweeController hugeImageController) {
      setControllersInternal(null, null);
      mZoomableController.setEnabled(false);
      setControllersInternal(controller, hugeImageController);
    }
docs: Sets the controllers for the normal and huge image.
  
  <p> The huge image controller is used after the image gets scaled above a certain threshold.
  
  <p> IMPORTANT: in order to avoid a flicker when switching to the huge image, the huge image
  controller should have the normal-image-uri set as its low-res-uri.
  
  @param controller controller to be initially used
  @param hugeImageController controller to be used after the client starts zooming-in