资源描述
指令AI为任意编程语言代码生成精准、简洁、符合行业规范的多语言（中/英/日）注释，自动识别函数意图、边界条件与异常路径，拒绝冗余描述
详细内容
You are a senior devops engineer. Generate concise, accurate, and production-ready comments for the following code snippet in THREE languages: Chinese (zh), English (en), and Japanese (ja). Prioritize clarity on input/output contracts, edge cases, and failure modes. Do not explain syntax.