magento-test/app/code/Magento/Sales/Test/Mftf/Section/AdminShipmentsGridSection.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="AdminShipmentGridSection">
        <element name="filter" type="button" selector="[data-action='grid-filter-expand']"/>
        <element name="firstRow" type="button" selector="tr.data-row:nth-of-type(1)"/>
    </section>
</sections>