@Override
  public boolean equals(final Object o) {
    if (o instanceof PayloadIdentifier) {
      return getAsBigInteger().equals(((PayloadIdentifier) o).getAsBigInteger());
    }
    return false;
  }
Serialize to hex string.

@return the string
consensus/merge/src/main/java/org/hyperledger/besu/consensus/merge/blockcreation/PayloadIdentifier.java