code: function () {
      var scene = this.el.object3D;
      var data = this.data;
  
      var size = data.size;
      var divisions = data.divisions;
      var colorCenterLine = data.colorCenterLine;
      var colorGrid = data.colorGrid;
  
      var gridHelper = new THREE.GridHelper( size, divisions, colorCenterLine, colorGrid );
      gridHelper.name = "gridHelper";
      scene.add(gridHelper);
    }
docs: Called once when component is attached. Generally for initial setup.