code: function () {
      this.controller = controllerUtils.findMatchingControllerWebXR(
        this.system.controllers,
        this.data.hand
      );
      // Legacy handle to the controller for old components.
      this.el.components['tracked-controls'].controller = this.controller;
  
      if (this.data.autoHide) { this.el.object3D.visible = !!this.controller; }
    }
docs: Handle update controller match criteria (such as `id`, `idPrefix`, `hand`, `controller`)