SourceDetails contains exclusively optional information which could be used by codec implementations in order to determine the underlying data format.

Creator is an interface implemented by all scanners, which allows components to construct a scanner from an unbounded io.ReadCloser.

Scanner is an interface implemented by all scanner implementations once a creator has instantiated it on a byte stream.

AckFn is a function provided to a scanner that it should call once the derived io.ReadCloser is fully consumed.