Function sn_transfers::create_first_cash_note_from_key

pub fn create_first_cash_note_from_key(
    first_cash_note_key: &MainSecretKey
) -> Result<CashNote, Error>

Utilities exposed Create a first CashNote given any key (i.e. not specifically the hard coded genesis key). The derivation index is hard coded to ensure deterministic creation. This is useful in tests.