Package constants is a collection of values that are used many times in the implementation, but has no relevance to users of the library, e.g., a link to where you can file an issue when you encounter a not-implemented feature; or a feature that is not fully implemented, e.g.

Package interfaces is an internal package containing generated go interfaces These exist as a "guarantee" that types implementing a specific IDL interface has the correct methods.

Package log contains functions used internally for logging to a default logger implementing [slog.Logger].