magento-test/app/code/Magento/Store/etc/data_source/website.xml

<?xml version="1.0"?>
<!--
/**
 * Copyright © Magento, Inc. All rights reserved.
 * See COPYING.txt for license details.
 */
-->
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:module:Magento_Ui:etc/data_source.xsd">
    <dataSource name="website" label="Website" dataSet="Magento\Store\Model\ResourceModel\Website\Collection">
        <fields>
            <field name="website_id" dataType="number" visible="false"/>
            <field name="name" dataType="text"/>
        </fields>
    </dataSource>
</config>