### Question:
RestAuthChoiceCallbackHandler extends AbstractRestAuthCallbackHandler<ChoiceCallback> { public String getCallbackClassName() { return CALLBACK_NAME; }  ChoiceCallback handle(HttpServletRequest request, HttpServletResponse response,
            JsonValue postBody, ChoiceCallback originalCallback); String getCallbackClassName(); JsonValue convertToJson(ChoiceCallback callback, int index); ChoiceCallback convertFromJson(ChoiceCallback callback, JsonValue jsonCallback);  }### Answer:
@Test public void shouldGetCallbackClassName() { String callbackClassName = restAuthChoiceCallbackHandler.getCallbackClassName(); assertEquals(ChoiceCallback.class.getSimpleName(), callbackClassName); }