{
  "variable1": {
    "type": "variable",
    "variable_type": "choice",
    "choices": {
      "name": "Choices",
      "values": [
        "val1",
        "val2"
      ]
    },
    "path": "variable1",
    "names": [
      "variable1"
    ],
    "description": "A first variable.",
    "properties": [
      {
        "type": "mode",
        "name": "basic"
      },
      {
        "type": "property",
        "name": "mandatory"
      },
      {
        "type": "property",
        "name": "unique"
      }
    ],
    "multiple": true,
    "gen_examples": [
      [
        "a_choice"
      ]
    ],
    "mandatory_without_value": true
  },
  "variable2": {
    "type": "variable",
    "variable_type": "choice",
    "choices": {
      "name": "Choices",
      "values": [
        "val1",
        "val2"
      ]
    },
    "path": "variable2",
    "names": [
      "variable2"
    ],
    "description": "A second variable.",
    "properties": [
      {
        "type": "mode",
        "name": "standard"
      },
      {
        "type": "property",
        "name": "unique"
      }
    ],
    "multiple": true,
    "gen_examples": [
      [
        "a_choice"
      ]
    ],
    "mandatory_without_value": false
  }
}