code: public static RdfStream fromModel(final Node node, final Model model) {
          return new DefaultRdfStream(node,
                  stream(spliteratorUnknownSize(model.listStatements(), IMMUTABLE), false).map(Statement::asTriple));
      }
docs: Create an RdfStream from an existing Model.
  @param node The subject node
  @param model An input Model
  @return a new RdfStream object