_onObjectModified(fEvent) {
    const { target } = fEvent;
    if (target.type === 'activeSelection') {
      const items = target.getObjects();

      items.forEach((item) => item.fire('modifiedInGroup', target));
    }

    this.fire(events.OBJECT_MODIFIED, target, this.getObjectId(target));
  }
"object:modified" canvas event handler
@param {{target: fabric.Object, e: MouseEvent}} fEvent - Fabric event
@private