Class allowing easy storage and retrieval of EditResults associated with revisions. Introduced in MW 1.36 for internal use by RevertedTagUpdateManager .

EditResults are stored in the main object stash and (depending on wiki's configuration) in revert change tags. This class stores the relevant data in the main stash. When asked to retrieve an EditResult for an edit and the requested key is not present in the main stash, the class will attempt to retrieve the EditResult from revert tags.