odd import statements

I'm trying to generate code for the IOS AVFoundation.h headers.

I've managed to get it to generate code (with lots of errors and warnings as it does the generation).

However I'm seeing some odd dart import statements in the generated code:

```dart
// You can uncomment this line when this package is ready
// import 'package:fondation/foundation.dart'
```
So two questions:
When am I meant to uncomment this lines? When is the 'package ready'?
Do I just need to uncomment these lines after the code gen.

2) the import has a package statement. Does this mean that I need to generate a separate package for each set of headers in ios?