Function bitcoinwallet_fees::feebumper_create_rate_bump_transaction

pub fn feebumper_create_rate_bump_transaction(
    wallet: &Wallet,
    txid: &u256,
    coin_control: &CoinControl,
    errors: &mut Vec<BilingualStr>,
    old_fee: &mut Amount,
    new_fee: &mut Amount,
    mtx: &mut MutableTransaction
) -> FeeBumperResult

| Create bumpfee transaction based on | feerate estimates. |