code: function UMLNodeInstanceView() {
          UMLGeneralNodeView.apply(this, arguments);
          this.iconRatio = NODE_RATIO_PERCENT;
          this.containerChangeable = true;
          // mixin UMLNodeViewMixin
          _.extend(UMLNodeInstanceView.prototype, UMLNodeViewMixin);
  
          this.fillColor = PreferenceManager.get("uml.nodeinstance.fillColor", "#ffffff") || PreferenceManager.get("view.fillColor", "#ffffff");
          this.stereotypeDisplay  = PreferenceManager.get("uml.node.stereotypeDisplay", UML.SD_LABEL);
      }
docs: UMLNodeInstanceView
  @constructor
  @mixes UMLNodeViewMixin
  @extends UMLGeneralNodeView