XML with namespaces

sample-input.xml

<?xml version="1.0" encoding="UTF-8"?>
<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/">
  <soapenv:Header/>
  <soapenv:Body>
    <api:Command xmlns:api="http://someservice.com/core/api">
      <api:Body>
        <api:Item key="standardRequest">
          <IDScoreRequest schemaVersion="3.0" xmlns="http://someservice.com/request">
            <Identity>
              <FirstName>John</FirstName>
            </Identity>
          </IDScoreRequest>
        </api:Item>
      </api:Body>
    </api:Command>
  </soapenv:Body>
</soapenv:Envelope>