public Class<?> getTargetClass() {
        return targetClass;
    }
@Test
    void testEmptyConstructor() {
        NacosDeserializationException exception = new NacosDeserializationException();
        assertEquals(Constants.Exception.DESERIALIZE_ERROR_CODE, exception.getErrCode());
        assertNull(exception.getMessage());
        assertNull(exception.getTargetClass());
    }