private void UpdateResidueCollector()
 {
     this.residueCollector =
         new SpecimenBuilderNodeAdapterCollection(
             this.graph,
             n => n is ResidueCollectorNode);
     this.residueCollector.GraphChanged += this.OnGraphChanged;
 }
 private void UpdateCustomizer()
 {
     this.customizer =
         new SpecimenBuilderNodeAdapterCollection(
             this.graph,
             n => n is CustomizationNode);
     this.customizer.GraphChanged += this.OnGraphChanged;
 }