magento-test/app/code/Magento/Theme/Test/Mftf/Section/StorefrontHeaderSection.xml

<?xml version="1.0" encoding="UTF-8"?>
<!--
 /**
  * Copyright © Magento, Inc. All rights reserved.
  * See COPYING.txt for license details.
  */
-->
<sections xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
          xsi:noNamespaceSchemaLocation="urn:magento:mftf:Page/etc/SectionObject.xsd">
    <section name="StorefrontHeaderSection">
        <element name="welcomeMessage" type="text" selector=".greet.welcome"/>
        <element name="logoLink" type="button" selector=".header .logo"/>
        <element name="logoImage" type="button" selector=".header .logo > img[src*='{{filename}}']" parameterized="true"/>
    </section>
</sections>