{
  "resourceType": "StructureDefinition",
  "id": "dca8f755-362c-447c-85f2-b5a18e608260",
  "meta": {
    "lastUpdated": "2018-08-23T11:26:52.819+00:00"
  },
  "url": "http://example.org/fhir/StructureDefinition/MyResearchSubject",
  "name": "MyResearchSubject",
  "status": "draft",
  "date": "2018-08-23T11:26:52.725+00:00",
  "fhirVersion": "3.0.1",
  "kind": "resource",
  "abstract": false,
  "type": "ResearchSubject",
  "baseDefinition": "http://hl7.org/fhir/StructureDefinition/ResearchSubject",
  "derivation": "constraint",
  "differential": {
    "element": [
      {
        "id": "ResearchSubject.extension",
        "path": "ResearchSubject.extension",
        "slicing": {
          "discriminator": [
            {
              "type": "value",
              "path": "url"
            }
          ],
          "rules": "open"
        }
      },
      {
        "id": "ResearchSubject.extension:carePlan",
        "path": "ResearchSubject.extension",
        "sliceName": "carePlan",
        "short": "Optional Extensions Element",
        "definition": "Optional Extension Element - found in all resources.",
        "min": 0,
        "max": "1",
        "type": [
          {
            "code": "Extension",
            "profile": "http://example.org/fhir/StructureDefinition/MyExtension2"
          }
        ]
      }
    ]
  }
}