di.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:ObjectManager/etc/config.xsd">
    <preference for="Magento\TestModule1\Service\V1\AllSoapAndRestInterface" type="Magento\TestModule1\Service\V1\AllSoapAndRest" />
    <preference for="Magento\TestModule1\Service\V2\AllSoapAndRestInterface" type="Magento\TestModule1\Service\V2\AllSoapAndRest" />

    <virtualType name="Magento\TestModule1\Service\Config\TestModule1MetadataConfig" type="Magento\Framework\Api\ExtensionAttribute\Config\MetadataConfig">
        <arguments>
            <argument name="attributeMetadataBuilder" xsi:type="object">Magento\TestModuleMSC\Model\Data\Eav\AttributeMetadataBuilder</argument>
            <argument name="dataObjectClassName" xsi:type="string">Magento\TestModule1\Service\V1\Entity\Item</argument>
        </arguments>
    </virtualType>
    <type name="Magento\TestModule1\Service\V1\Entity\ItemBuilder">
        <arguments>
            <argument name="metadataService" xsi:type="object">Magento\TestModule1\Service\Config\TestModule1MetadataConfig</argument>
        </arguments>
    </type>
</config>