<StructureDefinition xmlns="http://hl7.org/fhir">
  <id value="5b1f6d97-5503-4e93-a3c7-3bb90c02d895" />
  <meta>
    <lastUpdated value="2017-10-15T08:54:00.331+01:00" />
  </meta>
  <url value="http://hl7.org/fhir/StructureDefinition/MyExtension" />
  <name value="MyExtension" />
  <status value="draft" />
  <date value="2017-10-12T21:21:37.075+01:00" />
  <fhirVersion value="3.0.1" />
  <kind value="primitive-type" />
  <abstract value="false" />
  <contextType value="resource" />
  <context value="Patient" />
  <type value="Extension" />
  <baseDefinition value="http://hl7.org/fhir/StructureDefinition/Extension" />
  <derivation value="constraint" />
  <differential>
    <element id="Extension.id">
      <path value="Extension.id" />
      <definition value="unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces." />
      <comment value="Note that FHIR strings may not exceed 1MB in size" />
    </element>
    <element id="Extension.url">
      <path value="Extension.url" />
      <fixedUri value="http://hl7.org/fhir/StructureDefinition/MyExtension" />
    </element>
  </differential>
</StructureDefinition>