public void Test_Translate_UsingAlias()
        {
            var b = new RoslynTranslator(Stencil);

            b.AddUsingAlias("TestAlias", "UnityEditor.VisualScriptingTests.Roslyn.TestAlias");
            var c = b.Translate(GraphModel, CompilationOptions.Default);
            var d = c.GetRoot();

            var ud = d.DescendantNodes().OfType <UsingDirectiveSyntax>().Where(n => n.Alias != null).ToList();

            Assert.That(ud.Count, Is.EqualTo(5));
            Assert.That(ud.Count(u => u.Alias.Name.Identifier.Text == "TestAlias"), Is.EqualTo(1));
        }