Extension 
extension 
url 
value[x] 
valueReference valueCanonical
valueUri Documentation for this formatThis is the set of resources that conform to either of the profiles Artifact Reference (http://hl7.org/fhir/StructureDefinition/artifact-reference) and Artifact Reference (http://hl7.org/fhir/StructureDefinition/artifact-reference). E.g. what you have to deal with if you get resources conforming to one of them
| Name | Flags | Card. | Type | Description & Constraints Filter: |
|---|---|---|---|---|
| Extension | 0..1 | The artifact | ||
| extension | 0..* | Extension | Additional content defined by implementations | |
| url | 1..1 | uri | identifies the meaning of the extension | |
| value[x] | 1..1 | Value of extension | ||
| valueReference | Reference(Resource) | |||
| valueCanonical | canonical(Any) | |||
| valueUri | uri | |||
| Documentation for this format | ||||