Re: GetExistingLocalJoinPath() vs. the docs

Greetings,

While getting back into the thread Re: Optimization for updating foreign
tables in Postgres FDW, I noticed some issues with the docs and
GetExistingLocalJoinPath():

GetExistingLocalJoinPath() exists in src/backend/foreign/foreign.c, but
the docs include discussion of it under 54.2 - Foreign Data Wrapper
Callback Routines.  Shouldn't this be under 54.3. Foreign Data Wrapper
Helper Functions? 

Also, the prototype is incorrect in the docs (it
doesn't return a void)

and the paragraph about what it's for could do
with some wordsmithing.

A link from 54.2 to 54.3 which mentions it would be fine, of course.