Metadata pointing at a Composition (id = "example-composition")

<?xml version="1.0" encoding="UTF-8"?>

<DocumentReference xmlns="http://hl7.org/fhir">
  <id value="example-composition"/> 
  <meta> 
    <security> 
      <system value="http://terminology.hl7.org/CodeSystem/v3-ActReason"/> 
      <code value="HTEST"/> 
    </security> 
  </meta> 
  <identifier> 
    <system value="http://healthintersections.com.au/test"/> 
    <value value="1"/> 
  </identifier> 
  <status value="current"/> 
  <type> 
    <coding> 
      <system value="http://loinc.org"/> 
      <code value="11488-4"/> 
      <display value="Consult note"/> 
    </coding> 
  </type> 
  <category> 
    <coding> 
      <system value="http://loinc.org"/> 
      <code value="LP183761-8"/> 
      <display value="Report"/> 
    </coding> 
  </category> 
  <subject> 
    <reference value="Patient/xcda"/> 
    <display value="Henry Levin the 7th"/> 
  </subject> 
  <context> 
    <reference value="Encounter/xcda"/> 
  </context> 
  <event> 
    <concept> 
      <coding> 
        <system value="http://terminology.hl7.org/CodeSystem/v3-ActCode"/> 
        <code value="HEALTHREC"/> 
        <display value="health record"/> 
      </coding> 
    </concept> 
  </event> 
  <event> 
    <reference> 
      <reference value="Observation/example"/> 
    </reference> 
  </event> 
  <period> 
    <start value="2010-07-18"/> 
    <end value="2012-11-12"/> 
  </period> 
  <date value="2012-01-04T09:10:14Z"/> 
  <author> 
    <reference value="Practitioner/xcda-author"/> 
    <display value="Harold Hippocrates, MD"/> 
  </author> 
  <attester> 
    <mode> 
      <coding> 
        <system value="http://hl7.org/fhir/composition-attestation-mode"/> 
        <code value="professional"/> 
      </coding> 
    </mode> 
    <party> 
      <reference value="Practitioner/xcda-author"/> 
      <display value="Harold Hippocrates, MD"/> 
    </party> 
  </attester> 
  <relatesTo> 
    <code> 
      <coding> 
        <system value="http://hl7.org/fhir/document-relationship-type"/> 
        <code value="replaces"/> 
      </coding> 
    </code> 
    <target> 
      <reference value="DocumentReference/old-example"/> 
    </target> 
  </relatesTo> 
  <description value="Example of a Comprehensive DocumentReference resource. This is fully filled for
   all mandatory elements and all optional elements."/> 
  <content> 
    <attachment> 
      <url value="Composition/example"/> 
    </attachment> 
  </content> 
</DocumentReference>