BetaOptional BetaanchorBetacommentOptional BetadatasetOptional BetaperspectiveOptional BetaprojectOptional BetaresourceExplicit resource to use. On an individual operation this overrides any default;
on a SanityConfig it becomes the instance's default resource. Unlike
projectId/dataset, this can also be a media library or canvas resource.
Where a comment now attaches, within the field and document it already targets: a new anchor,
nullto drop the anchor and leave a field-level comment, or nothing at all to leave the anchor as it is.