ant vue detepicker手动关闭弹出来的选择框

/*html*/
  <a-range-picker
          ref="date"
          :locale="locale"
          v-model="selectValue.date"
        >
          <template slot="renderExtraFooter">
            <el-button size="mini" style="padding: 0 7px; height: 22px;" @click="test">0-90天</el-button>
          </template>
   </a-range-picker>
/*方法*/
methods: {
    test() {
      this.$refs.date.$refs.picker.sOpen = false
    },
}