/// <summary>
 /// Handles the ClusteringFinished event of the Parent control
 /// </summary>
 /// <param name="sender">The ClusteringToolPanelExtensionViewModel that fired the event</param>
 /// <param name="e">Arguments for the event</param>
 private void parent_ClusteringFinished(object sender, ClusteringEventArgs e)
 {
     if (IsActive)
             this.isPartOfCurrentClustering = true;
 }
 /// <summary>
 /// Raises the ClusteringFinished event
 /// </summary>
 /// <param name="e">The event agruments</param>
 protected virtual void OnClusteringFinished(ClusteringEventArgs e)
 {
     EventHandler<ClusteringEventArgs> handler = this.ClusteringFinished;
         if (handler != null)
         {
             handler(this, e);
         }
 }