public RoutedEventImplementation(Microsoft.Expression.DesignModel.Metadata.RoutedEventDescription routedEvent, EventImplementationBase clrImplementation) : base(routedEvent)
 {
     if (clrImplementation == null)
     {
         throw new ArgumentNullException("clrImplementation");
     }
     this.clrImplementation = clrImplementation;
 }
 protected RoutedEventImplementationBase(Microsoft.Expression.DesignModel.Metadata.RoutedEventDescription routedEventDescription)
 {
     this.routedEventDescription = routedEventDescription;
 }
 public MissingClrEventImplementation(Microsoft.Expression.DesignModel.Metadata.RoutedEventDescription routedEvent) : base(routedEvent)
 {
 }