[Checkstyle Check] reported by reviewdog 🐶 建议不要返回null! 1)编程规范-建议5.5: 集合请返回Collections.emptyXXX() 2)编程规范-建议8.6.2: 其他请使用JAVA 8 Optional特性代替 Raw Output: /home/runner/work/Sermant/Sermant/./sermant-agentcore/sermant-agentcore-core/src/main/java/io/sermant/core/config/utils/ConfigValueUtil.java:290:0: error: 建议不要返回null! 1)编程规范-建议5.5: 集合请返回Collections.emptyXXX() 2)编程规范-建议8.6.2: 其他请使用JAVA 8 Optional特性代替 (com.puppycrawl.tools.checkstyle.checks.regexp.RegexpSinglelineCheck)

Process completed with exit code 1.

Node.js 16 actions are deprecated. Please update the following actions to use Node.js 20: actions/checkout@v3. For more information see: https://github.blog/changelog/2023-09-22-github-actions-transitioning-from-node-16-to-node-20/.