also, I'm not sure it's just going to work because it seems comment 0 is requesting a behavior change, so fetching without an index fetches all the children... currently with parent and index it only fetches one... As I said I can't check atm due to lack of time left (sorry).
Bug 1293458 Comment 5 Edit History
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also, I'm not sure it's just going to work because it seems comment 0 is requesting a behavior change, so fetching without an index fetches all the children... currently with parent and index it only fetches one... As I said I can't check atm due to lack of time left (sorry). we have await fetchBookmarkByPosition(fetchInfo, options); this seems to require the addition of a fetchBookmarksByParent similar to fetchBookmarksByURL