在响应 header 中看不到 "X-Instance-Identity"(Jenkins 实例 ID)

Don't see "X-Instance-Identity" (Jenkins instance id) in the response header

It is documented that each Jenkins instance has a unique id that we can retrieve by doing a GET. I am unable to find it. For e.g. do a GET on https://builds.apache.org/api/json 并查看响应 headers

https://builds.apache.org/ URL 有。强调我的:

the public key can be obtained by sending the GET request to the top page of Jenkins, and look for the "X-Instance-Identity" header in the response