Function minted_items 

pub fn minted_items(
    doc: &mut AutoCommit,
    kind: &str,
    envelope: &ActionEnvelope,
    before: &[ChangeHash],
) -> Vec<String>

The item resources the action in envelope created: the ids it minted that its change stored as keys of a collection, in minting order. Read from the action’s own changes since before, never a diff of the whole document, so an edit costs the same however large the record is.