Extension 
url 
value[x] Binding: ?? (required): Declares what the source of a parameter is.
Documentation for this formatThis is the set of resources that conform to either of the profiles ValueSet Parameter Source (http://hl7.org/fhir/StructureDefinition/valueset-parameterSource) and ValueSet Parameter Source (http://hl7.org/fhir/StructureDefinition/valueset-parameterSource). 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 | Declares the source of the parameter | ||
| url | 1..1 | uri | identifies the meaning of the extension | |
| value[x] | 1..1 | code | Value of extension Binding: ?? (required): Declares what the source of a parameter is. | |
| Documentation for this format | ||||