Vuetify Data Table Expand Row on Column Click

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I have a vuetify data table that includes expandable rows. The only real difference I have from the demo is that I would like the item.name column to open/close the expandable row just like the chevron icon. When I put an @click handler on the v-slot for that column I get the error Error in v-on handler: "TypeError: expand is not a function". This is the only column I need to customize so I would like to not have to build out the entire <tr> v-slot by hand. A scaled-down code example is below. Thanks.

<v-data-table
    :headers="headers"
    :items="products"
    item-key="productCode"
    show-expand
    :expanded.sync="expanded"
>

  <template v-slot:item.name="{ item, expand, isExpanded }" >
    <h4 class="my-2" @click="expand(!isExpanded)">{{ item.name }} located in {{ item.depot | camelToWords }}</h4>
  </template>

  <template v-slot:expanded-item="{ headers, item }">
    <ProductDetailExpandedRow :currentProduct="item" :headers="headers"/>
  </template>

</v-data-table>

<script>
export default {
  data() {
    return {
      headers: [
        {
          text: 'Name',
          value: 'name',
        },
        {
          text: 'Product ID',
          value: 'productCode',
        },
        {
          text: 'Stock',
          value: 'stock',
        },
6 more columns continue on here...
      ],
      products: [],
    }
  }
}
</script>

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