[Bitstamp] WithdrawalRequest object does not support txid field

[tross-nydig]

The Bitstamp V2 API has an endpoint that gets withdrawal requests.

The response object looks like this:

{
    "address": "aMDHooGmAkyrsaQiKhAORhSNTmoRzxqWIO",
    "amount": "0.00006000",
    "currency": "BTC",
    "datetime": "2022-01-31 16:07:32",
    "id": 1,
    "network": "bitcoin",
    "status": 2,
    "transaction_id": "NsOeFbQhRnpGzNIThWGBTkQwRJqTNOGPVhYavrVyMfkAyMUmIlUpFIwGTzSvpeOP",
    "txid": 1,
    "type": 0
}

The transaction_id field is the transaction hash but the response also contains a field called txid that represents Bitstamp's internal transaction ID. This field is very useful for anyone who might also call the endpoint that brings back all Bitstamp user transactions.

The xchange-bitstamp module doesn't support this field at present but it's a pretty easy thing to add by simply adding txid to xchange-bitstamp/src/main/java/org/knowm/xchange/bitstamp/dto/account/WithdrawalRequest.java

[rizer1980]

Hello, tross-nydig
check #4889

[tross-nydig]

Awesome, quick work! I had my own pull request in the works but am just happy to have this field in the code now. I might create a small followup PR to add txId to the toString method if that's OK?

        + ", txid="
        + txid

[tross-nydig]

Added a tiny PR here: #4896

[timmolter]

merged #4896