<StructureDefinition xmlns="http://hl7.org/fhir">
  <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-wg">
    <valueCode value="fhir" />
  </extension>
  <url value="https://purl.org/elab/fhir/StructureDefinition/Variable" />
  <name value="Variable" />
  <status value="draft" />
  <date value="2017-06-16T16:37:26.09686+01:00" />
  <fhirVersion value="3.0.1" />
  <kind value="resource" />
  <abstract value="false" />
  <type value="Basic" />
  <baseDefinition value="http://hl7.org/fhir/StructureDefinition/Basic" />
  <derivation value="constraint" />
  <differential>
    <element>
      <path value="Basic.extension" />
      <slicing>
        <discriminator>
          <type value="value" />
          <path value="url" />
        </discriminator>
        <rules value="open" />
      </slicing>
    </element>
    <element id="Basic.extension:name">
      <path value="Basic.extension" />
      <sliceName value="Name" />
      <short value="Name" />
      <definition value="An identifier for the variable, must be unique over the annotation file/data source." />
      <min value="1" />
      <max value="1" />
      <type>
        <code value="Extension" />
        <profile value="https://purl.org/elab/fhir/StructureDefinition/Name" />
      </type>
    </element>
    <element id="Basic.extension:description">
      <path value="Basic.extension" />
      <sliceName value="Description" />
      <short value="Description" />
      <definition value="The variable description or label" />
      <min value="1" />
      <max value="1" />
      <type>
        <code value="Extension" />
        <profile value="https://purl.org/elab/fhir/StructureDefinition/Description" />
      </type>
    </element>
    <element id="Basic.extension:sourceDatatype">
      <path value="Basic.extension" />
      <sliceName value="SouceDatatype" />
      <short value="Optional Extensions Element" />
      <definition value="Source datatype from a ValueSet" />
      <min value="1" />
      <max value="1" />
      <type>
        <code value="Extension" />
        <profile value="https://purl.org/elab/fhir/StructureDefinition/SourceDatatype" />
      </type>
    </element>
    <element id="Basic.extension:destinationDatatype">
      <path value="Basic.extension" />
      <sliceName value="DestinationDatatype" />
      <short value="Optional Extensions Element" />
      <definition value="Destination datatype from a ValueSet" />
      <min value="1" />
      <max value="1" />
      <type>
        <code value="Extension" />
        <profile value="https://purl.org/elab/fhir/StructureDefinition/DestinationDatatype" />
      </type>
    </element>
    <element id="Basic.extension:unit">
      <path value="Basic.extension" />
      <sliceName value="Unit" />
      <short value="Unit" />
      <definition value="Unit from UCUM standard." />
      <min value="0" />
      <max value="1" />
      <type>
        <code value="Extension" />
        <profile value="https://purl.org/elab/fhir/StructureDefinition/Unit" />
      </type>
    </element>
    <element id="Basic.extension:coding">
      <path value="Basic.extension" />
      <sliceName value="coding" />
      <short value="Coding" />
      <definition value="Coding" />
      <min value="0" />
      <max value="*" />
      <type>
        <code value="Extension" />
        <profile value="https://purl.org/elab/fhir/StructureDefinition/CodingRef" />
      </type>
    </element>
    <element id="Basic.extension:format">
      <path value="Basic.extension" />
      <sliceName value="Format" />
      <short value="Format" />
      <definition value="Format" />
      <min value="0" />
      <max value="1" />
      <type>
        <code value="Extension" />
        <profile value="https://purl.org/elab/fhir/StructureDefinition/Format" />
      </type>
    </element>
    <element id="Basic.extension:language">
      <path value="Basic.extension" />
      <sliceName value="Language" />
      <short value="Language" />
      <definition value="Language" />
      <min value="0" />
      <max value="*" />
      <type>
        <code value="Extension" />
        <profile value="https://purl.org/elab/fhir/StructureDefinition/Language" />
      </type>
    </element>
    <element id="Basic.subject">
      <path value="Basic.subject" />
      <max value="0" />
    </element>
    <element id="Basic.extension:tag">
      <path value="Basic.extension" />
      <sliceName value="Tag" />
      <short value="Tag" />
      <definition value="Tag for search purposes." />
      <min value="0" />
      <max value="*" />
      <type>
        <code value="Extension" />
        <profile value="https://purl.org/elab/fhir/StructureDefinition/Tag" />
      </type>
    </element>
    <element id="Basic.extension:annotation">
      <path value="Basic.extension" />
      <sliceName value="annotation" />
      <min value="0" />
      <max value="1" />
      <type>
        <code value="Extension" />
        <profile value="https://purl.org/elab/fhir/StructureDefinition/AnnotationRef" />
      </type>
    </element>
    <element id="Basic.extension:conceptMaps">
      <path value="Basic.extension" />
      <sliceName value="conceptMap" />
      <short value="Concept Map" />
      <definition value="Mappings from source codes (in the data) to external terminology systems." />
      <min value="0" />
      <max value="1" />
      <type>
        <code value="Extension" />
        <profile value="https://purl.org/elab/fhir/StructureDefinition/ConceptMapRef" />
        <aggregation value="referenced" />
      </type>
    </element>
  </differential>
</StructureDefinition>