newsupernova/vendor/magento/module-robots/etc/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">
    <virtualType name="robotsResultPage" type="Magento\Framework\View\Result\Page">
        <arguments>
            <argument name="template" xsi:type="string">Magento_Robots::robots.phtml</argument>
        </arguments>
    </virtualType>
    <virtualType name="robotsResultPageFactory" type="Magento\Framework\View\Result\PageFactory">
        <arguments>
            <argument name="instanceName" xsi:type="string">robotsResultPage</argument>
        </arguments>
    </virtualType>
    <type name="Magento\Robots\Controller\Index\Index">
        <arguments>
            <argument name="resultPageFactory" xsi:type="object">robotsResultPageFactory</argument>
        </arguments>
    </type>
    <type name="Magento\Theme\Model\Design\Config\MetadataProvider">
        <arguments>
            <argument name="metadata" xsi:type="array">
                <item name="custom_instructions" xsi:type="array">
                    <item name="backend_model" xsi:type="string">Magento\Robots\Model\Config\Value</item>
                </item>
            </argument>
        </arguments>
    </type>
</config>