### Question:
FacesPostbackHandler extends AbstractHandlerMapping implements HandlerAdapter, HandlerMapping, Ordered,
		DispatcherAware { public boolean supports(Object handler) { return handler instanceof Postback; } FacesPostbackHandler(FacesViewStateHandler stateHandler); boolean supports(Object handler); ModelAndView handle(final HttpServletRequest request, HttpServletResponse response, final Object handler); long getLastModified(HttpServletRequest request, Object handler); void setDispatcher(Dispatcher dispatcher);  }### Answer:
@Test public void shouldSupportPostback() throws Exception { Postback postback = mock(Postback.class); Object nonPostback = mock(Object.class); assertThat(this.postbackHandler.supports(postback), is(true)); assertThat(this.postbackHandler.supports(nonPostback), is(false)); }