The prosemirror reference manuals probably need an update, but no rush
Noticed this when reviewing here: ProseMirror Reference manual
The following are missing and possibly other newer additions:
definingAsContext: prosemirror-model/schema.js at master · ProseMirror/prosemirror-model · GitHub
definingForContent: prosemirror-model/schema.js at master · ProseMirror/prosemirror-model · GitHub