<StructureDefinition xmlns="http://hl7.org/fhir">
  <id value="ext-attachment-metadata" />
  <url value="http://ontariohealth.ca/fhir/ehr/StructureDefinition/ext-attachment-metadata" />
  <name value="AttachmentMetadata" />
  <title value="Attachment Metadata Extension" />
  <status value="active" />
  <description value="Attachment Metadata Extension" />
  <fhirVersion value="4.0.1" />
  <kind value="complex-type" />
  <abstract value="false" />
  <context>
    <type value="element" />
    <expression value="Binary.data" />
  </context>
  <context>
    <type value="element" />
    <expression value="DiagnosticReport.presentedForm.data" />
  </context>
  <type value="Extension" />
  <baseDefinition value="http://hl7.org/fhir/StructureDefinition/Extension" />
  <derivation value="constraint" />
  <differential>
    <element id="Extension">
      <path value="Extension" />
      <short value="Attachment Metadata Extension" />
      <definition value="Attachment Metadata Extension" />
    </element>
    <element id="Extension.extension">
      <path value="Extension.extension" />
      <min value="2" />
    </element>
    <element id="Extension.extension:fileId">
      <path value="Extension.extension" />
      <sliceName value="fileId" />
      <short value="Unique identifier for the attachment" />
      <definition value="A unique identifier assigned to this attachment" />
      <min value="1" />
      <max value="1" />
      <mustSupport value="true" />
    </element>
    <element id="Extension.extension:fileId.extension">
      <path value="Extension.extension.extension" />
      <max value="0" />
    </element>
    <element id="Extension.extension:fileId.url">
      <path value="Extension.extension.url" />
      <fixedUri value="fileId" />
    </element>
    <element id="Extension.extension:fileId.value[x]">
      <path value="Extension.extension.value[x]" />
      <type>
        <code value="string" />
      </type>
    </element>
    <element id="Extension.extension:downloadURL">
      <path value="Extension.extension" />
      <sliceName value="downloadURL" />
      <short value="URL to download the attachment" />
      <definition value="Direct URL to download or access the attachment content" />
      <min value="1" />
      <max value="1" />
      <mustSupport value="true" />
    </element>
    <element id="Extension.extension:downloadURL.extension">
      <path value="Extension.extension.extension" />
      <max value="0" />
    </element>
    <element id="Extension.extension:downloadURL.url">
      <path value="Extension.extension.url" />
      <fixedUri value="downloadURL" />
    </element>
    <element id="Extension.extension:downloadURL.value[x]">
      <path value="Extension.extension.value[x]" />
      <type>
        <code value="url" />
      </type>
    </element>
    <element id="Extension.extension:jwtToken">
      <path value="Extension.extension" />
      <sliceName value="jwtToken" />
      <short value="JWT Token" />
      <definition value="JWT Token" />
      <min value="0" />
      <max value="1" />
      <mustSupport value="true" />
    </element>
    <element id="Extension.extension:jwtToken.extension">
      <path value="Extension.extension.extension" />
      <max value="0" />
    </element>
    <element id="Extension.extension:jwtToken.url">
      <path value="Extension.extension.url" />
      <fixedUri value="jwtToken" />
    </element>
    <element id="Extension.extension:jwtToken.value[x]">
      <path value="Extension.extension.value[x]" />
      <type>
        <code value="string" />
      </type>
    </element>
    <element id="Extension.url">
      <path value="Extension.url" />
      <fixedUri value="http://ontariohealth.ca/fhir/ehr/StructureDefinition/ext-attachment-metadata" />
    </element>
    <element id="Extension.value[x]">
      <path value="Extension.value[x]" />
      <max value="0" />
    </element>
  </differential>
</StructureDefinition>