@Override
  public String toString() {
    return "Sender "
        + sender
        + " has "
        + pendingTransactions.size()
        + " pending transactions "
        + pendingTransactions.stream()
            .map(PendingTransaction::toTraceLog)
            .collect(Collectors.joining(",", "[", "]"));
  }
A list of pending transactions of a specific sender, ordered by nonce asc

@param sender the sender
@param pendingTransactions the list of pending transactions order by nonce asc
ethereum/eth/src/main/java/org/hyperledger/besu/ethereum/eth/transactions/layered/SenderPendingTransactions.java