class Program
{
    static void Main(string[] args)
    {
        var instance = new Program();
        var cat = new AssemblyCatalog(typeof(Program).Assembly);
        var container = new CompositionContainer(cat);
        container.ComposeParts(instance);
 
        foreach (var plug in instance.Plugins)

class Program
{
    private static ImpCls s_imp = new ImpCls();
    private static string[] s_beforeState;
 
    static void Main(string[] args)
    {
        var c = new TypeCatalog(typeof(ExpMtd1));
        var catalog = new AggregateCatalog(c);
        var container = new CompositionContainer(catalog);