code: function UMLObjectNode() {
          UMLActivityNode.apply(this, arguments);
  
          /** @member {UMLClassifier} */
          this.type = null;
  
          /** @member {boolean} */
          this.isControlType = false;
  
          /** @member {string} */
          this.ordering = ONOK_FIFO;
      }
docs: UMLObjectNode
  @constructor
  @extends UMLActivityNode