<StructureDefinition xmlns="http://hl7.org/fhir">
  <url value="StructureDefinition/MyComposition" />
  <name value="MyComposition" />
  <status value="draft" />
  <date value="2017-09-11T13:49:04.122-04:00" />
  <fhirVersion value="3.0.1" />
  <kind value="resource" />
  <abstract value="false" />
  <type value="Composition" />
  <baseDefinition value="http://hl7.org/fhir/StructureDefinition/Composition" />
  <derivation value="constraint" />
  <differential>
    <element id="Composition.identifier">
      <path value="Composition.identifier" />
      <min value="1" />
    </element>
    <element id="Composition.class">
      <path value="Composition.class" />
      <max value="0" />
    </element>
    <element id="Composition.subject">
      <path value="Composition.subject" />
      <type>
        <code value="Reference" />
        <profile value="StructureDefinition/MyPractitioner" />
        <aggregation value="contained" />
      </type>
      <type>
        <code value="Reference" />
        <profile value="StructureDefinition/MyHealthcareService" />
        <aggregation value="contained" />
      </type>
      <type>
        <code value="Reference" />
        <targetProfile value="StructureDefinition/MyDocumentReference" />
        <aggregation value="contained" />
      </type>
    </element>
    <element id="Composition.encounter">
      <path value="Composition.encounter" />
      <max value="0" />
    </element>
    <element id="Composition.author">
      <path value="Composition.author" />
      <type>
        <code value="Reference" />
        <targetProfile value="StructureDefinition/MyPractitioner" />
      </type>
    </element>
    <element id="Composition.custodian">
      <path value="Composition.custodian" />
      <type>
        <code value="Reference" />
        <targetProfile value="StructureDefinition/MyOrganization" />
      </type>
    </element>
    <element id="Composition.relatesTo">
      <path value="Composition.relatesTo" />
      <max value="0" />
    </element>
    <element id="Composition.event">
      <path value="Composition.event" />
      <max value="0" />
    </element>
    <element id="Composition.section">
      <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-explicit-type-name">
        <valueString value="Section" />
      </extension>
      <path value="Composition.section" />
      <max value="0" />
    </element>
  </differential>
</StructureDefinition>