}
public BTCChinaGetWithdrawalResponse getWithdrawal(long id, String currency) throws IOException {
BTCChinaGetWithdrawalRequest request = new BTCChinaGetWithdrawalRequest(id, currency);
BTCChinaGetWithdrawalResponse response = btcChina.getWithdrawal(signatureCreator, BTCChinaUtils.getNonce(), request);
return checkResult(response);
}