namespace System.ComponentModel.Composition.Hosting
{
    [DebuggerTypeProxy(typeof(DirectoryCatalogDebuggerProxy))]
    public class DirectoryCatalog : ComposablePartCatalog, INotifyComposablePartCatalogChanged, ICompositionElement
    {
        public override IEnumerable<Tuple<ComposablePartDefinition, ExportDefinition>> GetExports(ImportDefinition definition);
    }
}