{
  "idempotent": false,
  "events": [
    {
      "kind": "request",
      "key": "send-2",
      "payload": "packet-B",
      "effect": true,
      "ack": false
    },
    {
      "kind": "verify",
      "observed_effect": true
    }
  ],
  "verify_cost": 0.5,
  "retry_cost": 0.1,
  "effect_probability": 0.6,
  "duplicate_cost": 4
}