7
                            renderContent (h, { node, data, store }) {
      return (
        <span>
          <i class={data.meta.icon}></i>
          <span>
            <span>{node.label}</span>
          </span>
        </span>
      )
    }我重新渲染了tree组件,新的icon图标也出来了,但是原来的那个箭头还存在,如何去除?
