Event block hash

[peerchemist]

Hello,

I am getting started with this package. I am following the https://github.com/devopsdao/webthree/blob/master/example/contracts.dart example.

  // listen for the Transfer event when it's emitted by the contract above
  final subscription = token.transferEvents().take(1).listen((event) {
    print('${event.from} sent ${event.value} MetaCoins to ${event.to}!');
  });

How can I obtain block height or block hash out of the event object?

print(event.blockHash);