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