I want to do something like this, but it does not works:

<?xml version="1.0" encoding="UTF-8"?>
<templates id="template" xml:space="preserve">
    <tr t-extend="ListView.row" t-att-class="view.class_for(record)">
    </tr>
</templates>

Just want to add t-att-class to the tr element. The problem is that tr is the root node, and I cant figure out how to refer it for inheritance. Can someone help me?

The original template looks like this:

<tr t-name="ListView.row"
        t-att-data-id="record.get('id')"
        t-att-style="view.style_for(record)">
    <t t-set="asData" t-value="record.toForm().data"/>
    <t t-foreach="columns" t-as="column">
        <td t-if="column.meta"> </td>
    </t>
    <th t-if="options.selectable" class="oe_list_record_selector" width="1">
        <t t-set="checked" t-value="options.select_view_id == record.get('id') ? 'checked' : null"/>
        <input t-if="options.radio" type="radio" name="radiogroup" t-att-checked="checked"/>
        <input t-if="!options.radio" type="checkbox" name="radiogroup" t-att-checked="checked"/>
    </th>
    <t t-foreach="columns" t-as="column">
        <t t-set="number" t-value="column.type === 'integer' or column.type == 'float'"/>
        <t t-set="modifiers" t-value="column.modifiers_for(asData)"/>
        <td t-if="!column.meta and column.invisible !== '1'" t-att-title="column.help"
            t-attf-class="oe_list_field_cell oe_list_field_#{column.widget or column.type} #{number ? 'oe_number' : ''} #{column.tag === 'button' ? 'oe-button' : ''} #{modifiers.readonly ? 'oe_readonly' : ''} #{modifiers.required ? 'oe_required' : ''}"
            t-att-data-field="column.id"
            ><t t-raw="render_cell(record, column)"/></td>
    </t>
    <td t-if="options.deletable" class='oe_list_record_delete' width="13px">
        <button type="button" name="delete" class="oe_i">d</button>
    </td>
</tr>