private static void ShouldRoundrip(LinqExpression original)
        {
            using var g = new GraphEngine.Graph();
            var s = g.CreateBlankNode();

            new SerialisingVisitor(s).Visit(original);
            new CompressingTurtleWriter(WriterCompressionLevel.Medium).Save(g, Console.Out, true);
            Console.WriteLine();

            var processed = GraphEngine.Expression.Parse(s).LinqExpression;

            Console.WriteLine(processed.GetDebugView());

            processed.Should().Be(original);
        }