public void Clone()
{
var f1 = new ServiceFactory <IThing>
{
Creator = () => new Thing()
};
var f2 = f1.Clone();
var s = f2.Create();
Assert.That(s, Is.Not.Null);
Assert.That(s, Is.InstanceOf <Thing>());
Assert.That(f2.Create(), Is.Not.SameAs(s));
Assert.That(f1.Create(), Is.Not.SameAs(s));
}