Extension 
extension 
url 
value[x] Documentation for this formatThis is the set of resources that conform to both Artifact Effective Period (http://hl7.org/fhir/StructureDefinition/artifact-effectivePeriod) and Artifact Effective Period (http://hl7.org/fhir/StructureDefinition/artifact-effectivePeriod).
| Name | Flags | Card. | Type | Description & Constraints Filter: |
|---|---|---|---|---|
| Extension | 0..1 | When the artifact is expected to be used | ||
| extension | 0..* | Extension | Additional content defined by implementations | |
| url | 1..1 | uri | identifies the meaning of the extension | |
| value[x] | 1..1 | Period | Value of extension | |
| Documentation for this format | ||||