The code at https://pub.dev/packages/pigeon/example

• Shouldn't it be FlutterActivity instead of Activity?
• Missing import of io.flutter.embedding.android.FlutterActivity, as there are two FlutterActivity classes, and one is wrong to use.
• Return statement in search() is missing semi-colon
• getBinaryMessenger doesn't exist, and should be getFlutterEngine().getDartExecutor() instead

@gaaclarke