public Class<?> getTargetClass() {
        return targetClass;
    }
@Test
    void testConstructorWithCause() {
        NacosDeserializationException exception = new NacosDeserializationException(new RuntimeException("test"));
        assertEquals(Constants.Exception.DESERIALIZE_ERROR_CODE, exception.getErrCode());
        assertEquals("errCode: 101, errMsg: Nacos deserialize failed.  ", exception.getMessage());
        assertNull(exception.getTargetClass());
    }