Union of http://hl7.org/fhir/StructureDefinition/questionnaire-referenceFilter and http://hl7.org/fhir/StructureDefinition/questionnaire-referenceFilter

This is the set of resources that conform to either of the profiles ReferenceFilter (http://hl7.org/fhir/StructureDefinition/questionnaire-referenceFilter) and ReferenceFilter (http://hl7.org/fhir/StructureDefinition/questionnaire-referenceFilter). E.g. what you have to deal with if you get resources conforming to one of them

Structure

NameFlagsCard.TypeDescription & Constraintsdoco
.. Extension 0..1Filter to apply when looking up references
ele-1: All FHIR elements must have a @value or children
ext-1: Must have either extensions or value[x], not both
... url 1..1uriidentifies the meaning of the extension
... value[x] 1..1stringValue of extension
ele-1: All FHIR elements must have a @value or children

doco Documentation for this format