<StructureDefinition xmlns="http://hl7.org/fhir">
  <meta>
    <lastUpdated value="2020-09-16T08:00:44.870+00:00" />
  </meta>
  <url value="https://fhir.simplifier.net/" />
  <name value="MyExtension" />
  <status value="draft" />
  <fhirVersion value="4.0.1" />
  <mapping>
    <identity value="rim" />
    <uri value="http://hl7.org/v3" />
    <name value="RIM Mapping" />
  </mapping>
  <kind value="complex-type" />
  <abstract value="false" />
  <type value="Extension" />
  <baseDefinition value="http://hl7.org/fhir/StructureDefinition/Extension" />
  <derivation value="constraint" />
  <differential>
    <element id="Extension.url">
      <path value="Extension.url" />
      <fixedUri value="https://fhir.simplifier.net/" />
    </element>
  </differential>
</StructureDefinition>