<StructureDefinition xmlns="http://hl7.org/fhir">
  <id value="8cf25898-9b2b-4772-a5bd-18fa6bc8f08f" />
  <meta>
    <versionId value="2" />
    <lastUpdated value="2016-12-13T17:35:12.311+00:00" />
  </meta>
  <url value="http://example.org/fhir/StructureDefinition/ethnicity" />
  <name value="ethnicity" />
  <status value="draft" />
  <date value="2016-12-13T18:22:48+01:00" />
  <kind value="datatype" />
  <constrainedType value="Extension" />
  <abstract value="false" />
  <contextType value="resource" />
  <context value="Patient" />
  <base value="http://hl7.org/fhir/StructureDefinition/Extension" />
  <differential>
    <element>
      <path value="Extension" />
    </element>
    <element>
      <path value="Extension.url" />
      <fixedUri value="http://example.org/fhir/StructureDefinition/ethnicity" />
    </element>
    <element>
      <path value="Extension.valueString" />
      <type>
        <code value="string" />
      </type>
    </element>
  </differential>
</StructureDefinition>