code: public CoinbaseTransaction getCoinbaseTransaction(String transactionIdOrIdemField)
        throws IOException {
  
      final CoinbaseTransaction transaction =
          coinbase.getTransactionDetails(
              transactionIdOrIdemField,
              exchange.getExchangeSpecification().getApiKey(),
              signatureCreator,
              exchange.getNonceFactory());
      return handleResponse(transaction);
    }
docs: Authenticated resource which returns the details of an individual transaction.
  
  @param transactionIdOrIdemField
  @return
  @throws IOException
  @see <a
  href="https://coinbase.com/api/doc/1.0/transactions/show.html">coinbase.com/api/doc/1.0/transactions/show.html</a>