39 New - Hutool

Need to mention that in the guide. Also, if there's a new way to handle system properties or environment variables, that could be part of the new features.

Troubleshooting: Common errors when using new features and how to fix them. hutool 39 new

This is a hypothetical example if they added a parseIso8601 method. Need to mention that in the guide

import cn.hutool.core.date.DateUtil;