<SearchParameter xmlns="http://hl7.org/fhir"><id value="example-constraint"/><extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-wg"><valueCode value="fhir"/></extension><url value="http://hl7.org/fhir/SearchParameter/example-constraint"/><name value="Exampleconstraint"/><title value="example-constraint"/><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 Composition Bundle"/><code value="example-constraint"/><aliasCode value="constraint-example"/><base value="Bundle"/><type value="reference"/><expression value="Bundle.entry[0].resource"/><processingMode value="normal"/><constraint value="Bundle.type = 'document' and Bundle.entry[0].resource is Composition"/><target value="Composition"/></SearchParameter>