public void ClearTest()
{
const string key = "Key";
IList <object> values = new List <object>();
var target = new KeyModel(key);
Assert.IsNotNull(target);
string value = "Value";
KeyModel actual = target.Add(value);
Assert.IsNotNull(actual);
Assert.IsTrue(actual.Values.Any());
target.Clear();
Assert.IsFalse(target.Values.Any());
}