<StructureDefinition xmlns="http://hl7.org/fhir">
  <meta>
    <lastUpdated value="2018-09-25T18:26:39.584+00:00" />
  </meta>
  <url value="http://example.org/fhir/StructureDefinition/MyUSCorePractitionerProfile" />
  <name value="MyUSCorePractitionerProfile" />
  <status value="draft" />
  <date value="2018-09-25T18:26:40.232+00:00" />
  <fhirVersion value="3.0.1" />
  <kind value="resource" />
  <abstract value="false" />
  <type value="Practitioner" />
  <baseDefinition value="http://hl7.org/fhir/us/core/StructureDefinition/us-core-practitioner" />
  <derivation value="constraint" />
  <differential>
    <element id="Practitioner.extension">
      <path value="Practitioner.extension" />
      <slicing>
        <discriminator>
          <type value="value" />
          <path value="url" />
        </discriminator>
        <rules value="open" />
      </slicing>
    </element>
    <element id="Practitioner.extension:Dingdong">
      <path value="Practitioner.extension" />
      <sliceName value="Dingdong" />
      <short value="Sample extension" />
      <type>
        <code value="Extension" />
        <profile value="Dingdong" />
      </type>
      <mustSupport value="false" />
    </element>
  </differential>
</StructureDefinition>