public static <T> T toObj(byte[] json, Class<T> cls) {
        try {
            return mapper.readValue(json, cls);
        } catch (Exception e) {
            throw new NacosDeserializationException(cls, e);
        }
    }
@Test
    void testToObject14() {
        assertThrows(Exception.class, () -> {
            JacksonUtils.toObj((InputStream) null, Object.class.getGenericSuperclass());
        });
    }