code: function UMLZigZagAdornmentView() {
          EdgeNodeView.apply(this, arguments);
          this.edgePosition = Core.EP_MIDDLE;
          this.sizable = Core.SZ_NONE;
          this.movable = Core.MM_FREE;
          this.alpha = Math.PI / 2;
          this.distance = 20;
      }
docs: UMLZigZagAdornmentView
  @constructor
  @extends EdgeNodeView