magento-test/app/code/Magento/MediaGalleryMetadata/etc/default.xmp

<?xpacket begin="" id="W5M0MpCehiHzreSzNTczkc9d"?>
<x:xmpmeta xmlns:x="adobe:ns:meta/" x:xmptk="XMP Core 5.4.0">
   <rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#">
      <rdf:Description rdf:about=""
            xmlns:dc="http://purl.org/dc/elements/1.1/"
            xmlns:exif="http://ns.adobe.com/exif/1.0/"
            xmlns:photoshop="http://ns.adobe.com/photoshop/1.0/">
         <dc:subject>
            <rdf:Seq>
               <rdf:li>magento</rdf:li>
            </rdf:Seq>
         </dc:subject>
         <dc:description><rdf:Alt><rdf:li xml:lang="x-default">Magento</rdf:li></rdf:Alt></dc:description>
         <dc:title><rdf:Alt><rdf:li xml:lang="x-default">Magento</rdf:li></rdf:Alt></dc:title>
         <dc:subject>
            <rdf:Bag>
               <rdf:li>magento</rdf:li>
               <rdf:li>mediagallerymetadata</rdf:li>
            </rdf:Bag>
         </dc:subject>
      </rdf:Description>
   </rdf:RDF>
</x:xmpmeta>
<?xpacket end="w"?>