{
  "swagger": "2.0",
  "info": {
    "version": "0.0.1",
    "title": "test of Swagger invalid pattern in headers"
  },
  "paths": {
    "/foo": {
      "get": {
          "responses": {
              "default": {
                "headers": {
                  "X-Foo": {
                    "type": "string",
                    "pattern": ")<-- bad pattern"
                  }
                },
                "description": "Generic Error"
            },
            "402": {
              "headers": {
                "X-Foo": {
                  "type": "string",
                  "pattern": ")<-- bad pattern"
                }
              },
              "description": "Generic Error"
          }
        }
      }
    }
  }
}