private byte[] createSignedTransactionData() {
    if (signedTxData == null) {
      signedTxData =
          SignUtil.signTransaction(createRawTransaction(), sender, signatureAlgorithm, chainId);
    }
    return signedTxData;
  }
Number of GAS units that the transaction will cost.
acceptance-tests/dsl/src/main/java/org/hyperledger/besu/tests/acceptance/dsl/transaction/account/TransferTransaction.java