{
  "resourceType": "StructureDefinition",
  "url": "http://example.org/fhir/StructureDefinition/ProcedureDatum",
  "name": "ProcedureDatum",
  "status": "draft",
  "fhirVersion": "3.0.1",
  "kind": "complex-type",
  "abstract": false,
  "contextType": "resource",
  "context": [
    "Procedure"
  ],
  "type": "Extension",
  "baseDefinition": "http://hl7.org/fhir/StructureDefinition/Extension",
  "derivation": "constraint",
  "differential": {
    "element": [
      {
        "id": "Extension.url",
        "path": "Extension.url",
        "fixedUri": "http://example.org/fhir/StructureDefinition/ProcedureDatum"
      },
      {
        "id": "Extension.value[x]:valueDate",
        "path": "Extension.valueDate",
        "sliceName": "valueDate",
        "type": [
          {
            "code": "date"
          }
        ]
      }
    ]
  }
}