code: public void bind(String url, Functions.Func callback) {
          cropper.croppie("bind", url).then((result, object) -> {
              callback.call();
              return true;
          });
      }
docs: Bind an image the cropper. Returns a promise to be resolved when the image has been loaded and the cropper has been initialized.
  
  @param url      - URL to Image
  @param callback - Callback when the Promise has been resolved.