{
  "resourceType": "StructureDefinition",
  "url": "https://example.org/fhir/StructureDefinition/MyPatient",
  "name": "MyPatient",
  "status": "draft",
  "fhirVersion": "4.0.1",
  "kind": "resource",
  "abstract": false,
  "type": "Patient",
  "baseDefinition": "http://hl7.org/fhir/StructureDefinition/Patient",
  "derivation": "constraint",
  "differential": {
    "element": [
      {
        "id": "Patient.identifier",
        "path": "Patient.identifier",
        "slicing": {
          "discriminator": [
            {
              "type": "value",
              "path": "system"
            }
          ],
          "rules": "open"
        }
      },
      {
        "id": "Patient.identifier:BSN",
        "path": "Patient.identifier",
        "sliceName": "BSN"
      },
      {
        "id": "Patient.identifier:BSN.system",
        "path": "Patient.identifier.system",
        "fixedUri": "http://fhir.nl/fhir/NamingSystem/bsn"
      },
      {
        "id": "Patient.identifier:BSN.value",
        "path": "Patient.identifier.value",
        "fixedString": "http://fhir.nl/fhir/NamingSystem/bsn"
      }
    ]
  }
}