uniapp怎么使用插件

{  "usingComponents": {    "uni-popup": "/static/uni-popup/uni-popup.vue"  }}

<template>  <uni-popup/></template>

import Vue from 'vue'import MyPlugin from './MyPlugin.vue'const install = (Vue) => {  Vue.component('my-plugin', MyPlugin)}export default {  install}

<template>  <my-plugin/></template>