Other utilities

• RetrieversChain – chain of responsibility composed of retriever functions (used to initialize referencing.Registry).

• RetrievalURITranslator – decorator for a Retrieve callable translating URIs that match with a given old base URI to a new base URI.

• to_maybe_cached_resource() (also to_resource() and to_cached_resource()) - utility decorators used to make a callable retrieving text by URI into a callable retrieving a Resource by URI, with optional caching.