HydratedBlocOverrides class

This class extends BlocOverrides and facilitates overriding Storage in addition to BlocObserver and EventTransformer. It should be extended by another class in client code with overrides that construct a custom implementation. For example:

class MyStorage extends Storage {
  ...
  // A custom Storage implementation.
  ...
}

void main() {
  HydratedBlocOverrides.runZoned(() {
    ...
    // HydratedBloc instances will use MyStorage.
    ...
  }, storage: MyStorage());
}