{
  "resourceType": "StructureDefinition",
  "url": "http://example.org/fhir/StructureDefinition/MyEncounter",
  "name": "MyEncounter",
  "status": "draft",
  "fhirVersion": "3.0.1",
  "kind": "resource",
  "abstract": false,
  "type": "Encounter",
  "baseDefinition": "http://hl7.org/fhir/StructureDefinition/Encounter",
  "derivation": "constraint",
  "differential": {
    "element": [
      {
        "id": "Encounter.extension",
        "path": "Encounter.extension",
        "slicing": {
          "discriminator": [
            {
              "type": "value",
              "path": "url"
            }
          ],
          "rules": "open"
        }
      },
      {
        "id": "Encounter.extension:MyExtension",
        "path": "Encounter.extension",
        "sliceName": "basedOn",
        "short": "Optional Extensions Element",
        "definition": "Optional Extension Element - found in all resources.",
        "min": 0,
        "max": "*",
        "type": [
          {
            "code": "Extension",
            "profile": "http://example.org/fhir/StructureDefinition/MyExtension"
          }
        ]
      }
    ]
  }
}