{
  "variable": {
    "type": "variable",
    "properties": [
      {
        "type": "type",
        "name": "choice"
      },
      {
        "type": "mode",
        "name": "basic"
      },
      {
        "type": "property",
        "name": "mandatory"
      }
    ],
    "choices": {
      "name": "Choices",
      "values": [
        "a",
        "b"
      ]
    },
    "path": "variable",
    "names": [
      "variable"
    ],
    "description": "A variable.",
    "gen_examples": [
      "a_choice"
    ],
    "mandatory_without_value": true
  }
}