Function name_range_by 

pub fn name_range_by(
    doc: &mut AutoCommit,
    start: &HistoryEntryId,
    end: Option<&HistoryEntryId>,
    label: &str,
    by: &str,
) -> String

name_range, with the by written into the record: a person’s actor hex, or GENERATED_BY for a name a model wrote.