Summary:
Ref T2852.
- Broadly, we support "I have a Ref, I need a PHID" well but not "I have a PHID, I need a Ref".
- Add DoorkeeperExternalObjectQuery, and use it to query ExternalObjects.
- Allow external objects to be imported by their internal PHIDs. Basically, if we have an edge pointing at an ExternalObject, we can say "load all the data about this" from just the PHID and have it hit all the same code.
- Allow construction of Refs from ExternalObjects. This makes the "I have a PHID, I need a Ref" easier.
Test Plan:
- Verified Asana links still enrich properly at display time.
- Used in future revision.
Reviewers: btrahan
Reviewed By: btrahan
CC: aran
Maniphest Tasks: T2852
Differential Revision: https://secure.phabricator.com/D6294
