{description: Accesses the last updated date of a FormularyItem, package_name: hl7.fhir.us.davinci, name: USDFMedicationKnowledgeLastUpdated, type: date, package_version: drug-formulary-2.0.1, class: unknown, kind: null, url: 'http://hl7.org/fhir/us/davinci-drug-formulary/SearchParameter/MedicationKnowledge-lastupdated', version: 2.0.1}