public void QuoteTest()
 {
     LinqToSparqlExpTranslator<Track> target = new LinqToSparqlExpTranslator<Track>();
     target.TypeTranslator = new XsdtTypeConverter();
     Expression e = Expression.Quote(Expression.Constant(5));
     StringBuilder sb = new StringBuilder();
     target.StringBuilder = sb;
     target.Quote(e);
     string actualResult = sb.ToString();
     string expectedResult = "\"5\""; //  assumption - it should retain its XSDT type?
     Assert.AreEqual(expectedResult, actualResult);
 }