{
    "items": [
        {
            "text": "most important numeric metric",
            "kind": "other",
            "columns": [],
            "statistics": [],
            "group_column": null,
            "group_values": []
        },
        {
            "text": "highest and lowest records",
            "kind": "statistic",
            "columns": [
                "petal_length",
                "petal_width",
                "sepal_length",
                "sepal_width"
            ],
            "statistics": [
                "max",
                "min"
            ],
            "group_column": null,
            "group_values": []
        }
    ]
}