{
  "name": "event.task.progress \u2014 one batched tick for two tasks",
  "description": "A single array at no more than 4 Hz, never one notification per task. At twenty active downloads that is four messages a second instead of eighty.",
  "notification": {
    "jsonrpc": "2.0",
    "method": "event.task.progress",
    "params": {
      "tasks": [
        {
          "taskId": "3f7a2b1c-5d6e-4f80-9a1b-2c3d4e5f6071",
          "downloadedBytes": 2941190144,
          "speedBps": 29796556,
          "etaSeconds": 110,
          "segments": [
            {
              "index": 0,
              "downloadedBytes": 402653184,
              "speedBps": 4089446
            },
            {
              "index": 1,
              "downloadedBytes": 356515840,
              "speedBps": 3565158
            }
          ]
        },
        {
          "taskId": "8c1d4e5f-6a7b-4c8d-9e0f-1a2b3c4d5e6f",
          "downloadedBytes": 402653184,
          "speedBps": 0,
          "etaSeconds": null,
          "segments": []
        }
      ],
      "at": "$isoDate"
    }
  },
  "assertions": [
    "emitted at no more than 4 Hz regardless of how many tasks are active",
    "clients apply a row patch; rebuilding the model on this event is a bug",
    "a task with no segment detail still reports its byte counter"
  ]
}