<StructureDefinition xmlns="http://hl7.org/fhir">
  <text>
    <status value="generated" />
    <div xmlns="http://www.w3.org/1999/xhtml">Enter your narrative here</div>
  </text>
  <url value="https://example.org/fhir/StructureDefinition/MyPatient" />
  <name value="MyPatient" />
  <status value="draft" />
  <fhirVersion value="5.0.0" />
  <kind value="resource" />
  <abstract value="false" />
  <type value="Patient" />
  <baseDefinition value="http://hl7.org/fhir/StructureDefinition/Patient" />
  <derivation value="constraint" />
  <differential>
    <element id="Patient.identifier">
      <path value="Patient.identifier" />
      <slicing>
        <discriminator>
          <type value="type" />
          <path value="$this" />
        </discriminator>
        <rules value="open" />
      </slicing>
    </element>
    <element id="Patient.address.extension:myExtension">
      <path value="Patient.address.extension" />
      <sliceName value="myExtension" />
      <type>
        <code value="Extension" />
        <profile value="https://example.org/fhir/StructureDefinition/MyExtension" />
      </type>
      <isModifier value="false" />
    </element>
  </differential>
</StructureDefinition>