public void AlgorithmIdentifier()
        {
            Assert.IsNotNull(new AlgorithmIdentifier("VariableName"));
            Assert.IsNotNull(new AlgorithmIdentifier(" Variable Name "));
            Assert.ThrowsException <ArgumentException>(() => { new AlgorithmIdentifier(""); });
            Assert.ThrowsException <ArgumentException>(() => { new AlgorithmIdentifier(" "); });
            Assert.ThrowsException <ArgumentException>(() => { new AlgorithmIdentifier("     "); });

            var identifier = new AlgorithmIdentifier(" Variable Name ");

            Assert.AreEqual(identifier.ToString(), " Variable Name ");
        }