<StructureDefinition xmlns="http://hl7.org/fhir">
  <id value="353f3411-d640-4042-b3aa-19e89fed20a6" />
  <meta>
    <lastUpdated value="2018-05-25T21:48:55.097+00:00" />
  </meta>
  <url value="http://localhost:4080/StructureDefinition/ImagingStudy-Annotation" />
  <name value="ImagingStudy-Annotation" />
  <status value="draft" />
  <date value="2018-05-25T21:48:56.88+00:00" />
  <fhirVersion value="3.0.1" />
  <kind value="complex-type" />
  <abstract value="false" />
  <contextType value="resource" />
  <context value="ImagingStudy.series.instance" />
  <type value="Extension" />
  <baseDefinition value="http://hl7.org/fhir/StructureDefinition/Extension" />
  <derivation value="constraint" />
  <differential>
    <element id="Extension">
      <path value="Extension" />
      <short value="Optional Extensions Element" />
      <definition value="Optional Extension Element - found in all resources." />
      <base>
        <path value="Element" />
        <min value="0" />
        <max value="*" />
      </base>
      <constraint>
        <key value="ext-1" />
        <severity value="error" />
        <human value="Must have either extensions or value[x], not both" />
        <expression value="extension.exists() != value.exists()" />
        <xpath value="exists(f:extension)!=exists(f:*[starts-with(local-name(.), 'value')])" />
      </constraint>
      <mapping>
        <identity value="rim" />
        <map value="N/A" />
      </mapping>
    </element>
    <element id="Extension.extension">
      <path value="Extension.extension" />
      <slicing>
        <discriminator>
          <type value="value" />
          <path value="url" />
        </discriminator>
        <rules value="open" />
      </slicing>
    </element>
    <element id="Extension.extension:Id">
      <path value="Extension.extension" />
      <sliceName value="Id" />
      <min value="1" />
      <max value="1" />
    </element>
    <element id="Extension.extension:Id.url">
      <path value="Extension.extension.url" />
      <fixedUri value="Id" />
    </element>
    <element id="Extension.extension:Id.value[x]:valueId">
      <path value="Extension.extension.valueId" />
      <sliceName value="valueId" />
      <min value="1" />
      <type>
        <code value="id" />
      </type>
    </element>
    <element id="Extension.extension:Author">
      <path value="Extension.extension" />
      <sliceName value="Author" />
      <min value="1" />
      <max value="1" />
    </element>
    <element id="Extension.extension:Author.url">
      <path value="Extension.extension.url" />
      <fixedUri value="Author" />
    </element>
    <element id="Extension.extension:Author.value[x]:valueString">
      <path value="Extension.extension.valueString" />
      <sliceName value="valueString" />
      <min value="1" />
      <type>
        <code value="string" />
      </type>
    </element>
    <element id="Extension.extension:Date">
      <path value="Extension.extension" />
      <sliceName value="Date" />
      <min value="1" />
      <max value="1" />
    </element>
    <element id="Extension.extension:Date.url">
      <path value="Extension.extension.url" />
      <fixedUri value="Date" />
    </element>
    <element id="Extension.extension:Date.value[x]:valueDateTime">
      <path value="Extension.extension.valueDateTime" />
      <sliceName value="valueDateTime" />
      <min value="1" />
      <type>
        <code value="dateTime" />
      </type>
    </element>
    <element id="Extension.extension:Content">
      <path value="Extension.extension" />
      <sliceName value="Content" />
      <min value="1" />
      <max value="1" />
    </element>
    <element id="Extension.extension:Content.url">
      <path value="Extension.extension.url" />
      <fixedUri value="Content" />
    </element>
    <element id="Extension.extension:Content.value[x]:valueString">
      <path value="Extension.extension.valueString" />
      <sliceName value="valueString" />
      <min value="1" />
      <type>
        <code value="string" />
      </type>
    </element>
    <element id="Extension.url">
      <path value="Extension.url" />
      <fixedUri value="http://localhost:4080/StructureDefinition/ImagingStudy-Annotation" />
    </element>
    <element id="Extension.value[x]">
      <path value="Extension.value[x]" />
      <max value="0" />
    </element>
  </differential>
</StructureDefinition>