"ETag",
            "v1",
            "Vary",
            "Accept-Charset",
            "Donut",
            "a",
          ),
        body = "A",
      ),
    )
    server.enqueue(
      MockResponse
        .Builder()
        .clearHeaders()
        .addHeader("Donut: b")
        .code(HttpURLConnection.HTTP_NOT_MODIFIED)
        .build(),
    )
    client =

        "legend": {
          "displayMode": "table",
          "placement": "bottom",
          "showLegend": true,
          "values": [
            "percent"
          ]
        },
        "pieType": "donut",
        "reduceOptions": {
          "calcs": [
            "lastNotNull"
          ],
          "fields": "",
          "values": false
        },
        "tooltip": {
          "mode": "single",