{
  "title": "Select Shipping Method",
  "type": "object",
  "required": [
    "shipping_method"
  ],
  "properties": {
    "shipping_method": {
      "title": "Shipping Method",
      "type": "string",
      "oneOf": [
        {
          "const": "standard",
          "title": "Standard"
        },
        {
          "const": "overnight",
          "title": "Overnight"
        }
      ]
    }
  }
}