"object-lookup" data source for all store objects of a given set of types, subject to the current user’s permissions.
The ID is the
ref of the store object, as a string, and the display name is the title of the object.
To create a data source which looks up all people and organisation objects in the store:
P.dataSource("people_and_orgs", "object-lookup", [ T.Person, T.Organisation ]);