text: // Copyright (c) 2016-2019 The Bitnamicoin Core developers
  // Distributed under the MIT software license, see the accompanying
  // file COPYING or http://www.opensource.org/licenses/mit-license.php.
  
  #include <util/rbf.h>
  
  #include <primitives/transaction.h>
  
  bool SignalsOptInRBF(const CTransaction &tx)
  {
      for (const CTxIn &txin : tx.vin) {
          if (txin.nSequence <= MAX_BIP125_RBF_SEQUENCE) {
              return true;
          }
      }
      return false;
  }
  