var conventions =
    new ConventionsCatalog();
 
conventions.Configure(c =>
{
    c.CreateParts(t => t.Namespace.Contains("Extension") && t.ImplementsInterface(typeof(IFoo)), a =>
    {
        a.Import<IFoo>(f => f.Calculate(0, 0)).As<IFoo>().AsRecomposable();
        a.Import<IFoo>(f => f.Calculate(1, 2)).As<IFoo>();
    });
 
    c.CreateParts(t => t.ImplementsInterface(typeof(IFoo)), a =>
    {
        a.Import<IFoo>(f => f.Calculate(0, 0)).As<IFoo>();
        a.Import<IFoo>(f => f.Calculate(1, 2)).As<IFoo>();
    });
});