{description: Search based on whether a patient was part of a multiple birth or not., package_name: hl7.fhir.uv.extensions.r4, name: BirthOrderBoolean, type: token, package_version: 0.1.0, class: unknown, kind: null, url: 'http://hl7.org/fhir/SearchParameter/patient-extensions-Patient-birthOrderBoolean', version: 0.1.0}