MeineExtension.xml

<StructureDefinition xmlns="http://hl7.org/fhir">
    <id value="MeineExtension" />
    <url value="http://example.org/StructureDefinition/MeineExtension" />
    <name value="MeineExtension" />
    <status value="active" />
    <description value="Extension f&#252;r IG Template" />
    <fhirVersion value="4.0.1" />
    <mapping>
        <identity value="rim" />
        <uri value="http://hl7.org/v3" />
        <name value="RIM Mapping" />
    </mapping>
    <kind value="complex-type" />
    <abstract value="false" />
    <context>
        <type value="element" />
        <expression value="Patient" />
    </context>
    <type value="Extension" />
    <baseDefinition value="http://hl7.org/fhir/StructureDefinition/Extension" />
    <derivation value="constraint" />
    <differential>
        <element id="Extension">
            <path value="Extension" />
            <definition value="Extension f&#252;r IG Template" />
        </element>
        <element id="Extension.extension">
            <path value="Extension.extension" />
            <max value="0" />
        </element>
        <element id="Extension.url">
            <path value="Extension.url" />
            <fixedUri value="http://example.org/StructureDefinition/MeineExtension" />
        </element>
        <element id="Extension.value[x]">
            <path value="Extension.value[x]" />
            <type>
                <code value="string" />
            </type>
        </element>
    </differential>
</StructureDefinition>