Help to see what going on in side CompositionContainer
Container = new CompositionContainer(
new AggregateCatalog(
new AssemblyCatalog( Assembly.GetExecutingAssembly() ) ,
new AssemblyCatalog( Assembly.LoadFrom( @"MEFVisualizer.Exe" ) )
) );
Container.Compose( batch );
var meftoDgml = new MEFToDGML( Container){ IsNamespaceGrouping = true }; // The Visualizer
meftoDgml.WriteToDGMLFile(); // Write to DGML file