code: function createElement() {
      var element = document.createElement('canvas');
      element.setAttribute('touch-action', 'none');
      element.style.position = 'absolute';
      element.style.display = 'block';
  
      return element;
    }
docs: Create a the canvas element used by the widget and set
  some default CSS values.
  @memberof CanvasWidget
  @static