{description: Returns AllergyIntolerance.reaction instances where the ILCore Reaction Duration extension has a specified Duration value., package_name: il.core.fhir.r4, name: ILCoreReactionDuration, type: quantity, package_version: 0.17.4, class: unknown, kind: null, url: 'http://fhir.health.gov.il/SearchParameter/il-core-reaction-duration', version: 1.0.0}