{
  "resourceType": "StructureDefinition",
  "id": "knownAs",
  "url": "https://example.org/fhir/StructureDefinition/MyExtension",
  "version": "0.1",
  "name": "KnownAs4Patient",
  "status": "draft",
  "date": "2022-11-09",
  "purpose": "patients known as",
  "fhirVersion": "4.0.1",
  "mapping": [
    {
      "identity": "RIM",
      "uri": "http://hl7.org/v3",
      "name": "RIM Mapping"
    }
  ],
  "kind": "complex-type",
  "abstract": false,
  "context": [
    {
      "type": "element",
      "expression": "Patient"
    }
  ],
  "type": "Extension",
  "baseDefinition": "http://hl7.org/fhir/StructureDefinition/Extension",
  "derivation": "constraint",
  "differential": {
    "element": [
      {
        "id": "Extension",
        "path": "Extension",
        "max": "1"
      },
      {
        "id": "Extension.extension",
        "path": "Extension.extension",
        "slicing": {
          "discriminator": [
            {
              "type": "value",
              "path": "url"
            }
          ],
          "rules": "open"
        },
        "min": 0
      },
      {
        "id": "Extension.extension:knownAs",
        "path": "Extension.extension",
        "sliceName": "knownAs",
        "min": 0,
        "max": "1"
      },
      {
        "id": "Extension.extension:knownAs.url",
        "path": "Extension.extension.url",
        "fixedUri": "knownAs"
      },
      {
        "id": "Extension.extension:knownAs.value[x]",
        "path": "Extension.extension.value[x]",
        "type": [
          {
            "code": "HumanName"
          }
        ]
      },
      {
        "id": "Extension.url",
        "path": "Extension.url",
        "fixedUri": "https://example.org/fhir/StructureDefinition/MyExtension"
      },
      {
        "id": "Extension.value[x]",
        "path": "Extension.value[x]",
        "slicing": {
          "discriminator": [
            {
              "type": "type",
              "path": "$this"
            }
          ],
          "rules": "open"
        },
        "max": "0"
      },
      {
        "id": "Extension.value[x]:sliceValue",
        "path": "Extension.value[x]",
        "sliceName": "sliceValue"
      }
    ]
  }
}