T208801: Support slots other than the main slot in EditPage - backend support

Phabricator Link	T208801
Status	open
Priority	normal (orange)
Author	[1]
Owner
Projects	Patch-For-Review Multi-Content-Revisions (New Features) CPT Initiatives (MCR)
Subtasks
Parent Tasks	T204112: Support slots other than the main slot in EditPage
Tags

Related Gerrit Changes:

Change	Subject	Status	Owner	Created	Last Modified	Project
460436	[MCR][WIP] Introduce EditController	ABANDONED	Anomie	13 Sep 2018	04 Feb 2022	mediawiki/core