newsupernova/vendor/magento/framework/View/Layout/etc/html.xsd

<?xml version="1.0" encoding="UTF-8"?>
<!--
/**
 * Copyright © Magento, Inc. All rights reserved.
 * See COPYING.txt for license details.
 */
-->
<xs:schema attributeFormDefault="unqualified" elementFormDefault="qualified" xmlns:xs="http://www.w3.org/2001/XMLSchema">
    <xs:complexType name="htmlType">
        <xs:sequence>
            <xs:element type="htmlAttributeType" name="attribute"/>
        </xs:sequence>
    </xs:complexType>
    <xs:complexType name="htmlAttributeType">
        <xs:simpleContent>
            <xs:extension base="xs:string">
                <xs:attribute type="xs:string" name="name"/>
                <xs:attribute type="xs:string" name="value"/>
            </xs:extension>
        </xs:simpleContent>
    </xs:complexType>
</xs:schema>