This is the Continuous Integration Build of FHIR (will be incorrect/inconsistent at times).
See the Directory of published versions
Example SearchParameter/example-extension (XML)
Raw XML (canonical form + also see XML Format Specification)
Search parameter for an extension example (id = "example-extension")
<?xml version="1.0" encoding="UTF-8"?>
<SearchParameter xmlns="http://hl7.org/fhir">
<id value="example-extension"/>
<extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-wg">
<valueCode value="fhir"/>
</extension>
<url value="http://hl7.org/fhir/SearchParameter/example-extension"/>
<name value="ExampleSearchParameterOnAnExtension"/>
<title value="Example Search Parameter on an extension"/>
<status value="draft"/>
<experimental value="true"/>
<publisher value="HL7 International / FHIR Infrastructure"/>
<contact>
<telecom>
<system value="url"/>
<value value="http://www.hl7.org/Special/committees/fiwg"/>
</telecom>
</contact>
<description value="Search by url for a participation agreement, which is stored as an extension referencing
a DocumentReference"/>
<code value="part-agree"/>
<base value="Patient"/>
<type value="reference"/>
<expression value="Patient.extension('http://example.org/fhir/StructureDefinition/participation-agreement').valu
e"/>
<processingMode value="normal"/>
<target value="DocumentReference"/>
</SearchParameter>
Usage note: every effort has been made to ensure that the
examples are correct and useful, but they are not a normative part
of the specification.