Reduce the use of Model/QueryExecution in Fuseki

[afs]

Change

In preparation for evolving Fuskei #2775, this task is to clean up Fuseki (jena-fuseki-core, jena-fuseki-main. jena-fuseki-access). One task is use switch use of Model and related APIs to Graph related APIs in internal use.

This is not removing use of Model, QueryExecution etc. It's in the Fuseki module API and testing uses the client-side APIs; the assembler subsystem in Jena uses the model-level API.

Are you interested in contributing a pull request for this task?

Yes