http://hl7.org/fhir/uv/sdc/StructureDefinition/sdc-questionnaire-definitionExtractValue|4.0.0-ballot
Provide either a fixed value, or an expression to evaluate, to be used as the value for the extracted resource's property based on the `definition` value.
| type | destination |
|---|---|
| baseDefinition | http://hl7.org/fhir/StructureDefinition/Extension |
| type | http://hl7.org/fhir/StructureDefinition/Extension |
| Extension.extension.value[x].type | http://hl7.org/fhir/StructureDefinition/uri |
| Extension.extension.value[x].type | http://hl7.org/fhir/StructureDefinition/Expression |