Using Add with ForSingletonOf in StructureMap

[Neil Martin Patrao]

If have two classes Class1 and Class2 both implementing an interface IInterface.

And now if I need a singleton instance of each of these classes, would this be the right way to implement it?

c.ForSingletonOf<IInterface>().Use<Class1>().Named("Class1");
c.ForSingletonOf<IInterface>().Add<Class2>().Named("Class2");

And then getting the instances like this:

container.GetInstance<IInterface>("Class1");
container.GetInstance<IInterface>("Class2");

Is there anything wrong in this approach or is there a better approach?