private String capitalizeFirstLetter(String name) {
    return name.substring(0, 1).toUpperCase() + name.substring(1);
  }
Unconventional way of adding a Javascript interface but the main reason why I took this way
is that it is working stable compared to the webview.addJavascriptInterface way.
selendroid-server/src/main/java/io/selendroid/server/model/AndroidNativeElement.java