@Override
  public Operation.OperationResult executeFixedCostOperation(
      final MessageFrame frame, final EVM evm) {
    final long timestamp = frame.getBlockValues().getTimestamp();
    frame.pushStackItem(Words.longBytes(timestamp));

    return successResponse;
  }
Instantiates a new Timestamp operation.

@param gasCalculator the gas calculator
evm/src/main/java/org/hyperledger/besu/evm/operation/TimestampOperation.java