{
  "resourceType": "SearchParameter",
  "url": "https://pakers.lv/fhir/SearchParameter/BirthPlace",
  "name": "MySearchParameterBirthPlace",
  "status": "draft",
  "description": "Search parameter to find patients by birth place",
  "code": "birthplace",
  "base": [
    "Patient"
  ],
  "type": "reference",
  "expression": "MyPatient.extension('https://example.org/fhir/StructureDefinition/OcupationType').value"
}