vuetify + v-treeview inside v-combobox item slot

Есть варианты использования treeview внутри combobox?

Мои попытки не увенчались успехом из-за того, что items combobox не воспринимает children дерева treeview...

Разметка:

<div id="app">
  <v-app>
    <v-content>
      <v-container grid-list-xl>
       <v-combobox v-model="value" :items="items" label="Tree">
         <template slot="item" slot-scope="data">
          <v-treeview :items="items"></v-treeview>
        </template>
       </v-combobox>
      </v-container>
    </v-content>
  </v-app>
</div>

JavaScript:

new Vue({
  el: '#app',
  data: () => ({
    items: [
        {
          id: 1,
          name: 'Applications :',
          children: [
            { id: 2, name: 'Calendar : app' },
            { id: 3, name: 'Chrome : app' },
            { id: 4, name: 'Webstorm : app' }
          ]
        },
        {
          id: 5,
          name: 'Documents :',
          children: [
            {
              id: 6,
              name: 'vuetify :',
              children: [
                {
                  id: 7,
                  name: 'src :',
                  children: [
                    { id: 8, name: 'index : ts' },
                    { id: 9, name: 'bootstrap : ts' }
                  ]
                }
              ]
            },
            {
              id: 10,
              name: 'material2 :',
              children: [
                {
                  id: 11,
                  name: 'src :',
                  children: [
                    { id: 12, name: 'v-btn : ts' },
                    { id: 13, name: 'v-card : ts' },
                    { id: 14, name: 'v-window : ts' }
                  ]
                }
              ]
            }
          ]
        },
        {
          id: 15,
          name: 'Downloads :',
          children: [
            { id: 16, name: 'October : pdf' },
            { id: 17, name: 'November : pdf' },
            { id: 18, name: 'Tutorial : html' }
          ]
        },
        {
          id: 19,
          name: 'Videos :',
          children: [
            {
              id: 20,
              name: 'Tutorials :',
              children: [
                { id: 21, name: 'Basic layouts : mp4' },
                { id: 22, name: 'Advanced techniques : mp4' },
                { id: 23, name: 'All about app : dir' }
              ]
            },
            { id: 24, name: 'Intro : mov' },
            { id: 25, name: 'Conference introduction : avi' }
          ]
        }
      ],
      value: []
  })
})