This is a larger-than-usual PR so I'll point it out on dev@.
This is the RDF Patch code from RDF Delta.The code is available with an Apache License in RDF Delta [1]. It predates RDF Delta, and started with joint work with Rob Vesse.
Issue: https://github.com/apache/jena/pull/1618 PR: https://github.com/apache/jena/pull/1619 Documentation: https://github.com/apache/jena-site/pull/131 Andy [1] https://afs.github.io/rdf-delta/
