<StructureDefinition xmlns="http://hl7.org/fhir">
  <id value="Activity Log" />
  <meta>
    <lastUpdated value="2017-08-19T15:21:51.663+01:00" />
  </meta>
  <url value="https://simplifier.net/FhirFli/SleepLog" />
  <name value="sleepLog" />
  <status value="draft" />
  <date value="2017-08-16T16:45:28.8366735+01:00" />
  <description value="Base StructureDefinition for Activity logs made using Observation Resource" />
  <fhirVersion value="1.0.2" />
  <kind value="resource" />
  <constrainedType value="Observation" />
  <abstract value="false" />
  <base value="http://hl7.org/fhir/StructureDefinition/Observation" />
  <differential>
    <element>
      <path value="Observation" />
    </element>
    <element>
      <path value="Observation.extension" />
      <slicing>
        <discriminator value="url" />
        <rules value="open" />
      </slicing>
    </element>
    <element>
      <path value="Observation.extension" />
      <name value="isFavourite" />
      <short value="Base for all elements" />
      <definition value="Optional Extensions Element - found in all resources." />
      <min value="0" />
      <max value="*" />
      <type>
        <code value="Extension" />
        <profile value="http://www.fhirdata.exchange/" />
      </type>
    </element>
    <element>
      <path value="Observation.extension" />
      <name value="activityName" />
      <short value="Base for all elements" />
      <definition value="Optional Extensions Element - found in all resources." />
      <min value="0" />
      <max value="*" />
      <type>
        <code value="Extension" />
        <profile value="http://www.fhirdata.exchange/" />
      </type>
    </element>
    <element>
      <path value="Observation.code" />
      <code>
        <system value="http://snomed.info/sct" />
        <code value="257733005" />
        <display value="Activity" />
      </code>
      <code>
        <system value="http://loinc.org" />
        <code value="73985-4" />
        <display value="Excercise activity" />
      </code>
    </element>
    <element>
      <path value="Observation.encounter" />
      <max value="0" />
    </element>
    <element>
      <path value="Observation.performer" />
      <max value="0" />
    </element>
    <element>
      <path value="Observation.dataAbsentReason" />
      <max value="0" />
    </element>
    <element>
      <path value="Observation.interpretation" />
      <max value="0" />
    </element>
    <element>
      <path value="Observation.comments" />
      <max value="0" />
    </element>
    <element>
      <path value="Observation.bodySite" />
      <max value="0" />
    </element>
    <element>
      <path value="Observation.method" />
      <max value="0" />
    </element>
    <element>
      <path value="Observation.specimen" />
      <max value="0" />
    </element>
    <element>
      <path value="Observation.referenceRange" />
      <name value="referenceRange" />
      <max value="0" />
    </element>
    <element>
      <path value="Observation.related" />
      <max value="0" />
    </element>
    <element>
      <path value="Observation.component" />
      <slicing>
        <discriminator value="code" />
        <rules value="open" />
      </slicing>
    </element>
    <element>
      <path value="Observation.component" />
      <name value="exerciseDistance" />
    </element>
    <element>
      <path value="Observation.component.code" />
      <code>
        <system value="http://loinc.org" />
        <code value="55412-1" />
        <display value="Exercise distance" />
      </code>
    </element>
    <element>
      <path value="Observation.component.valueQuantity" />
      <type>
        <code value="Quantity" />
      </type>
    </element>
    <element>
      <path value="Observation.component" />
      <name value="exerciseDuration" />
      <code>
        <system value="http://loinc.org" />
        <code value="55411-3" />
        <display value="exercise duration" />
      </code>
      <code>
        <system value="http://snomed.info/sct" />
        <code value="103335007" />
        <display value="duration" />
      </code>
    </element>
    <element>
      <path value="Observation.component.valueQuantity" />
      <type>
        <code value="Quantity" />
      </type>
    </element>
    <element>
      <path value="Observation.component" />
      <name value="caloriesBurned" />
    </element>
    <element>
      <path value="Observation.component.code" />
      <code>
        <system value="http://loinc.org" />
        <code value="41981-2" />
        <display value="Calories burned" />
      </code>
    </element>
    <element>
      <path value="Observation.component.valueQuantity" />
      <type>
        <code value="Quantity" />
      </type>
    </element>
  </differential>
</StructureDefinition>