{
    "$schema": "https://vega.github.io/schema/vega-lite/v4.json",
    "layer": [
        {
            "mark": "line",
            "data": {
                "url": "https://vega.github.io/vega-lite/data/stocks.csv"
            },
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                "color": {
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                    "type": "temporal"
                },
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                    "field": "price",
                    "type": "quantitative"
                }
            }
        },
        {
            "mark": {
                "size": 2,
                "strokeDash": [
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                    2
                ],
                "type": "rule"
            },
            "data": {
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            },
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}