Description
Update orchestrator code (of Wikidata Fetch functions) to create (nested) instances of the the Point-In-Time type. We are currently calling this new type Point-In-Time in Phabricator, but its official English label hasn't been determined yet.
See also General notes in T390559.
Desired behavior/Acceptance criteria (returned value, expected error, performance expectations, etc.)
- Execution of the new code should be reliable and quick, and should return appropriate errors as needed.
Completion checklist
- Before closing this task, review one by one the checklist available here: https://www.mediawiki.org/wiki/Abstract_Wikipedia_team/Definition_of_Done#Back-end_Task/Bug_completion_checklist