[
  {
    "native": true,
    "json": {
      "x": null
    },
    "python": {
      "x": null
    }
  },
  {
    "native": true,
    "json": {
      "x": 1
    },
    "python": {
      "x": 1
    }
  },
  {
    "native": false,
    "json": {
      "x": "x"
    },
    "python": {
      "x": "x"
    }
  }
]