HEX

File: /home/petsclubcc/magento/vendor/magento/module-admin-notification/view/adminhtml/layout/default.xml
<?xml version="1.0"?>
<!--
/**
 * Copyright © 2016 Magento. All rights reserved.
 * See COPYING.txt for license details.
 */
-->
<page xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:View/Layout/etc/page_configuration.xsd">
    <body>
        <referenceContainer name="notifications">
            <block class="Magento\AdminNotification\Block\System\Messages" name="system_messages" as="system_messages" before="-" template="Magento_AdminNotification::system/messages.phtml"/>
            <block class="Magento\AdminNotification\Block\System\Messages\UnreadMessagePopup" name="unread_system_messages" as="unread_system_messages" after="system_messages" template="Magento_AdminNotification::system/messages/popup.phtml"/>
            <block class="Magento\AdminNotification\Block\Window" name="notification_window" as="notification_window" acl="Magento_AdminNotification::show_toolbar" template="notification/window.phtml"/>
        </referenceContainer>
        <referenceContainer name="header">
            <block class="Magento\AdminNotification\Block\ToolbarEntry" name="notification.messages" before="user" template="toolbar_entry.phtml"/>
        </referenceContainer>
    </body>
</page>