          },
                "a1"
              ],
              "parent": "root",
              "return": {
                "coins-inserted": [],
                "coins-returned": ["quarter", "quarter", "nickel"],
                "dispensed": { "name": "taco", "qty": 10, "price": 0.85 },
                "inventory": { "a1": { "name": "taco", "qty": 9, "price": 0.85 } },
                "err-msg": null
              },
              "name": "omni-trace.testing-ns/press-button",
              "start": 163743