magento-test/app/code/Magento/Customer/etc/cache.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:framework:Cache/etc/cache.xsd">
    <type name="customer_notification" translate="label,description" instance="Magento\Customer\Model\Cache\Type\Notification">
        <label>Customer Notification</label>
        <description>Customer Notification</description>
    </type>
</config>