{
  "resourceType": "StructureDefinition",
  "url": "https://example.org/fhir/StructureDefinition/MyAddress",
  "name": "MyAddress",
  "status": "draft",
  "description": "Example profile of Address",
  "fhirVersion": "4.0.1",
  "kind": "complex-type",
  "abstract": false,
  "type": "Address",
  "baseDefinition": "http://hl7.org/fhir/StructureDefinition/Address",
  "derivation": "constraint",
  "differential": {
    "element": [
      {
        "id": "Address",
        "path": "Address",
        "constraint": [
          {
            "key": "Demo-1",
            "requirements": "Something",
            "severity": "error",
            "human": "Example Error message",
            "expression": "line.empty() or $this.hasValue()"
          }
        ]
      }
    ]
  }
}