public void PrintLiteral()
        {
            var rdf = new RdfData(new NodeFactory());
            var g   = rdf.GetBlankGraph();

            var expected = "_:g <app:test> \"Literal\\rMultiline\\\\\" .";

            g.Assert(g.Blank("g"),
                     rdf.Uri("app:test"),
                     rdf.New("Literal\rMultiline\\"));

            var target = new NodeWriter(g);

            using var wr = new StringWriter();

            target.Print(wr);

            wr.Flush();
            var result = wr.GetStringBuilder().ToString().Trim();

            Assert.AreEqual(expected, result);
        }