public void IfNeededDoesNotReplace()
{
sut.BindGeneric(typeof(IGeneric1 <>), typeof(Concrete <>));
sut.BindGenericIfNeeded(typeof(IGeneric1 <>), typeof(Concrete2 <>));
Assert.True(sut.Get <IGeneric1 <int> >() is Concrete <int>);
Assert.True(sut.Get <IGeneric1 <string> >() is Concrete <string>);
}