MKMapView comes mainly from github.com/cappuccino/MapKit before v3 support was reverted.
MKAnnotation and MKPlacemark is from github.com/mafis/MapKit + initial binding support for centerCoordinate.
There is a test for a cib-based MapView also testing the geocoding feature.
USAGE: 1/ build the framework ‘cd MapKit && jake’
2/ In Tests/MapKitCibTest/Frameworks/, symlink the built framework (should be in $CAPP_BUILD/Release/MapKit) along with AppKit and Foundation.