using System.ComponentModel.Composition; using Microsoft.Practices.Prism.ViewModel; using NLog; using System.Windows.Input; using Microsoft.Practices.Prism.Commands; using System.Collections.ObjectModel; using System.Windows; using Google.ProtocolBuffers; namespace TreeCanvas { [Export(typeof(TreeCanvasViewModel))] [PartCreationPolicy(CreationPolicy.NonShared)] class TreeCanvasViewModel : NotificationObject { } }