{
  "openapi": "3.0.0",
  "info": {
    "title": "OpenAPI 3.0.0 operation 204 example",
    "version": "1"
  },
  "paths": {
    "/foo": {
      "post": {
        "responses": {
          "200": {
            "description": "OK",
            "content": {
              "application/json": {
                "schema": {
                  "type": "string"
                }
              }
            }
          },
          "204": {
            "description": "Created"
          }
        }
      }
    }
  }
}