稳定性: 0 - 已弃用：
RFC 9113 中已弃用优先级信号支持，Node.js 也不再支持该功能。
¥Stability: 0 - Deprecated: support for priority signaling has been deprecated
in the RFC 9113 and is no longer supported in Node.js.
空方法，仅用于保持一定的向后兼容性。
¥Empty method, only there to maintain some backward compatibility.