<SearchParameter xmlns="http://hl7.org/fhir">
  <id value="ServiceToHeartbeatLinkSP" />
  <url value="http://omi.de/fhir/registry/SearchParameter/ServiceToHeartbeatLinkSP" />
  <version value="0.3.28" />
  <name value="ServiceToHeartbeatLinkSP" />
  <status value="active" />
  <publisher value="MOLIT gGmbH" />
  <description value="Service to Heartbeat Link Search Parameter" />
  <code value="servicetoheartbeat" />
  <base value="HealthcareService" />
  <type value="reference" />
  <expression value="HealthcareService.extension('http://omi.de/fhir/registry/StructureDefinition/service-to-heart-beat-observation-link-extension').value" />
  <target value="Observation" />
  <chain value="*" />
</SearchParameter>