Function convert 

pub fn convert(
    name: &str,
    start: &RecordingStart,
    steps: &[RecordedStep],
    ran: &BTreeMap<usize, Vec<(String, Value)>>,
) -> Converted

Builds a macro called name from the recorded steps. ran is what a macro or script run ran, by step index (crate::engine::record::Recorder::ran); a run without an entry is left out and listed in skipped.