{description: 'Drugs, devices, etc. under study, as a code', package_name: hl7.fhir.r6.core, name: focus-code, type: token, package_version: 6.0.0-ballot1, class: unknown, kind: null, url: 'http://hl7.org/fhir/SearchParameter/ResearchStudy-focus-code', version: 6.0.0-ballot1}