{
  "openapi": "3.0.3",
  "info": {
    "title": "Minimal Polymorphic Discriminator Reproduction",
    "version": "1.0.0",
    "description": "Demonstrates an issue where TypeScript type generation results in wrong discriminator for nested allOf inheritance with discriminators at multiple levels."
  },
  "paths": {
    "/cars": {
      "get": {
        "summary": "Get cars",
        "responses": {
          "200": {
            "description": "List of cars",
            "content": {
              "application/json": {
                "schema": {
                  "type": "array",
                  "items": {
                    "oneOf": [
                      { "$ref": "#/components/schemas/CarDto" },
                      { "$ref": "#/components/schemas/VolvoDto" }
                    ]
                  }
                }
              }
            }
          }
        }
      }
    }
  },
  "components": {
    "schemas": {
      "VehicleDto": {
        "type": "object",
        "required": ["$type", "id"],
        "properties": {
          "$type": {
            "type": "string"
          },
          "id": {
            "type": "integer"
          }
        },
        "discriminator": {
          "propertyName": "$type",
          "mapping": {
            "Car": "#/components/schemas/CarDto",
            "Volvo": "#/components/schemas/VolvoDto"
          }
        }
      },
      "CarDto": {
        "allOf": [
          { "$ref": "#/components/schemas/VehicleDto" },
          {
            "type": "object",
            "required": ["modelName"],
            "properties": {
              "modelName": {
                "type": "string"
              }
            }
          }
        ]
      },
      "VolvoDto": {
        "allOf": [
          { "$ref": "#/components/schemas/CarDto" },
          {
            "type": "object",
            "required": ["seatbeltCount"],
            "properties": {
              "seatbeltCount": {
                "type": "integer"
              }
            }
          }
        ]
      }
    }
  }
}