{
  "resourceType": "StructureDefinition",
  "id": "df03e2f0-78ff-40d0-9c96-9ce2bd319ac9",
  "meta": {
    "versionId": "2",
    "lastUpdated": "2016-12-16T13:09:43.544+00:00"
  },
  "url": "http://hl7.no/fhir/StructureDefinition/valid-period",
  "name": "Extension.ValidPeriod",
  "status": "draft",
  "date": "2016-12-16T11:27:57+00:00",
  "description": "Extension defining the valid period.",
  "kind": "datatype",
  "constrainedType": "Extension",
  "abstract": false,
  "contextType": "resource",
  "context": [
    "string"
  ],
  "base": "http://hl7.org/fhir/StructureDefinition/Extension",
  "differential": {
    "element": [
      {
        "path": "Extension"
      },
      {
        "path": "Extension.url",
        "fixedUri": "StructureDefinition/MyExtension"
      },
      {
        "path": "Extension.valuePeriod",
        "type": [
          {
            "code": "Period"
          }
        ]
      }
    ]
  }
}