<StructureDefinition xmlns="http://hl7.org/fhir">
  <url value="http://apiframework.dedalus.eu/fhir/StructureDefinition/element-Period" />
  <name value="element-Period" />
  <status value="active" />
  <experimental value="false" />
  <description value="General purpose extension to add validity periods to a FHIR element, e.g: Patient.GeneralPractitioner.period" />
  <fhirVersion value="3.0.1" />
  <kind value="complex-type" />
  <abstract value="false" />
  <contextType value="datatype" />
  <context value="Element" />
  <context value="Resource" />
  <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="http://apiframework.dedalus.eu/fhir/StructureDefinition/element-Period" />
    </element>
    <element id="Extension.value[x]:valuePeriod">
      <path value="Extension.valuePeriod" />
      <sliceName value="valuePeriod" />
      <type>
        <code value="Period" />
      </type>
    </element>
  </differential>
</StructureDefinition>