{
  "resourceType": "StructureDefinition",
  "url": "https://example.org/fhir/StructureDefinition/MyTest",
  "name": "MyTest",
  "status": "draft",
  "fhirVersion": "4.0.1",
  "kind": "resource",
  "abstract": false,
  "type": "Basic",
  "baseDefinition": "http://hl7.org/fhir/StructureDefinition/Basic",
  "derivation": "constraint",
  "differential": {
    "element": [
      {
        "id": "Basic.extension:myExtension",
        "path": "Basic.extension",
        "sliceName": "myExtension",
        "type": [
          {
            "code": "Extension",
            "profile": [
              "https://example.org/fhir/StructureDefinition/MyExtension"
            ]
          }
        ],
        "isModifier": false
      }
    ]
  }
}