private static void InitializeMef()
        {
            var catalog = new AggregateCatalog();
            var assembly = typeof( Program ).Assembly;
            catalog.Catalogs.Add( new AssemblyCatalog( assembly ));

            var container = new CompositionContainer( catalog );

            _dataManager = new DataManager();
            container.ComposeParts( _dataManager );
        }
 private void TestCleanup()
 {
     this._target = null;
 }