<StructureDefinition xmlns="http://hl7.org/fhir">
  <url value="https://purl.org/elab/fhir/StructureDefinition/Tag" />
  <name value="Tag" />
  <description value="Tags or keywords for search purposes." />
  <status value="draft" />
  <date value="2017-06-27T10:41:36" />
  <kind value="complex-type" />
  <type value="Extension" />
  <fhirversion value="3.0.0" />
  <abstract value="false" />
  <baseDefinition value="http://hl7.org/fhir/StructureDefinition/Extension" />
  <context value="Basic" />
  <contextType value="resource" />
  <derivation value="constraint" />
  <differential>
    <element>
      <fixedUri value="https://purl.org/elab/fhir/StructureDefinition/Tag" />
      <Path value="Extension.url" />
    </element>
    <element>
      <short value="Tags or keywords for search purposes." />
      <definition value="Tag" />
      <sliceName value="Tag" />
      <min value="0" />
      <max value="*" />
      <path value="Extension.valueString" />
      <type>
        <code value="string" />
      </type>
    </element>
  </differential>
</StructureDefinition>