magento-test/app/code/Magento/Customer/Test/Mftf/ActionGroup/StorefrontCustomerAddressBookNumberOfAddressesActionGroup.xml

<?xml version="1.0" encoding="UTF-8"?>
<!--
 /**
  * Copyright © Magento, Inc. All rights reserved.
  * See COPYING.txt for license details.
  */
-->

<actionGroups xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
              xsi:noNamespaceSchemaLocation="urn:magento:mftf:Test/etc/actionGroupSchema.xsd">
    <!-- Go to Address Book -->
    <actionGroup name="StorefrontCustomerAddressBookNumberOfAddresses">
        <annotations>
            <description>Validate that the Customer Address count is present and correct on the Storefront Customer Dashboard page.</description>
        </annotations>
        <arguments>
            <argument name="number" type="string"/>
        </arguments>
        
        <see userInput="{{number}} Item" selector="{{StorefrontCustomerAddressesSection.numberOfAddresses}}" stepKey="checkNumberOfAddresses"/>
    </actionGroup>
</actionGroups>