https://ftp.nordu.net/pub/ietf/internet-drafts/draft-consolidated-content-00.html
HTTP Content Negotiation for Consolidated Machine-Readable Representations
This document specifies the use of HTTP content negotiation with the Prefer header to request consolidated, machine-optimised representations of web resources....
http content negotiationconsolidatedmachinereadablerepresentations
https://leyline.org/manual/zh-cn/content-negotiation.html
Content Negotiation - Apache HTTP Server Version 2.4
apache http servercontent negotiationversion