code: def render_runtimes(runtimes):
      return json.dumps(
          {
              "$schema": "https://vega.github.io/schema/vega-lite/v3.json",
              "description": "Runtimes of jobs.",
              "data": {"values": runtimes},
              "mark": "point",
              "encoding": {
                  "x": {
                      "field": "runtime",
                      "type": "quantitative",
                      "axis": {
                          "title": "runtime [s]",
                          "labelAngle": -90,
                      },
                      "scale": {"type": "log"},
                  },
                  "y": {"field": "rule", "type": "nominal"},
                  "color": {"value": "#007bff"},
              },
          }
      )
  
label_desc: Use image node_id 1 for calling a global function with example usage: render_runtimes(runtimes) and returns: json