private BootstrapHandler loadBootstrap(String bootstrapClassName)
      throws ClassNotFoundException, IllegalAccessException, InstantiationException {
    return classLoader.loadClass(bootstrapClassName).asSubclass(BootstrapHandler.class).newInstance();
  }
Loads a {@link BootstrapHandler} class from the extension dex.
selendroid-server/src/main/java/io/selendroid/server/extension/ExtensionLoader.java