### Question:
NavigationMethodReturnValueHandler implements HandlerMethodReturnValueHandler { public boolean supportsReturnType(MethodParameter returnType) { return true; }  boolean supportsReturnType(MethodParameter returnType); void handleReturnValue(Object returnValue, MethodParameter returnType, ModelAndViewContainer mavContainer,
			NativeWebRequest webRequest);  }### Answer:
@Test public void shouldSupportAllTypes() throws Exception { assertThat(this.handler.supportsReturnType(mockMethodParameter(Object.class)), is(true)); assertThat(this.handler.supportsReturnType(mockMethodParameter(String.class)), is(true)); }