<StructureDefinition xmlns="http://hl7.org/fhir">
  <id value="zd-documentreference" />
  <url value="http://zorgdomein.nl/fhir/StructureDefinition/zd-documentreference" />
  <version value="1" />
  <name value="ZD DocumentReference" />
  <status value="draft" />
  <date value="2017-04-26" />
  <publisher value="ZorgDomein" />
  <contact>
    <telecom>
      <system value="url" />
      <value value="https://zorgdomein.nl" />
    </telecom>
    <telecom>
      <system value="email" />
      <value value="io@zorgdomein.nl" />
    </telecom>
  </contact>
  <kind value="resource" />
  <abstract value="false" />
  <type value="DocumentReference" />
  <baseDefinition value="http://hl7.org/fhir/StructureDefinition/DocumentReference" />
  <derivation value="constraint" />
  <differential>
    <element id="DocumentReference">
      <path value="DocumentReference" />
      <mustSupport value="true" />
    </element>
    <element id="DocumentReference.content">
      <path value="DocumentReference.content" />
      <mustSupport value="true" />
    </element>
    <element id="DocumentReference.content.attachment">
      <path value="DocumentReference.content.attachment" />
      <mustSupport value="true" />
    </element>
    <element id="DocumentReference.content.attachment.contentType">
      <path value="DocumentReference.content.attachment.contentType" />
      <min value="1" />
    </element>
    <element id="DocumentReference.content.attachment.data">
      <path value="DocumentReference.content.attachment.data" />
      <min value="1" />
    </element>
  </differential>
</StructureDefinition>