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Deprecate (hopefully) the CustomData extension
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MediaWiki-extensions-CustomData is superseded by ParserOutput#setExtensionData and #getExtensionData so it should be deprecated.


  • The RelatedArticles extension is updated to use the new-ish ParserOutput methods
  • Update the RelatedArticles extension page to reflect that the extension no longer requires the CustomData extension T115019
  • Email wikitech-l to see which other extensions rely on the CustomData extension and need to be updated

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phuedx raised the priority of this task from to Needs Triage.
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Change 244379 had a related patch set uploaded (by Jdlrobson):
Remove CustomData dependency

I've sent a mail about sunsetting it.
I realised that we actually need to keep the dependency for 30 days so I think updating the MediaWiki page will have to wait. Have created T115019 to capture that.
@phuedx do you want to remove that acceptance criteria?

Change 244379 merged by jenkins-bot:
Remove CustomData dependency

@Jdlrobson: We should take it upon ourselves to do the same for those other extensions that are still relying on MediaWiki-extensions-CustomData.

Sure. Let's push this forward a few sprints though. We need to stay focused.