{description: How a search parameter relates to the set of elements returned by evaluating its xpath query., package_name: hl7.fhir.r4b.expansions, name: XPathUsageType, type: null, package_version: 4.3.0, class: unknown, kind: null, url: 'http://hl7.org/fhir/ValueSet/search-xpath-usage', version: 4.3.0}