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      "@@@STEP_NEST_LEVEL@2@@@",
      "@@@STEP_LOG_LINE@json.output@{@@@",
      "@@@STEP_LOG_LINE@json.output@  \"_number\": 12345@@@",
      "@@@STEP_LOG_LINE@json.output@}@@@",
      "@@@STEP_LOG_END@json.output@@@",
      "@@@STEP_LOG_LINE@json.input@{@@@",
      "@@@STEP_LOG_LINE@json.input@  \"change_id\": \"3380b83c11e029b7291c83c44e7b1ce09d465fd1\"@@@",
      "@@@STEP_LOG_LINE@json.input@}@@@",
      "@@@STEP_LOG_END@json.input@@@",
      "@@@STEP_LINK@gerrit link@https://foo-review.googlesource.com/q/3380b83c11e029b7291c83c44e7b1ce09d465fd1@@@"
    ]
  },
  {
    "cmd": [
      "[START_DIR]/cipd_tool/infra/tools/luci/gerrit/0e548aa33f8113a45a5b3b62201e114e98e63d00f97296912380138f44597b07/gerrit",
      "change-detail",
      "-host",
      "https://foo-review.googlesource.com",
      "-input",
      "{\"change_id\": \"363caa907186de786cb5292cd1ab7245da954815\"}",
      "-output",
      "/path/to/tmp/json"
    ],
    "infra_step": true,
    "luci_context": {
      "realm": {
        "name": "project:ci"
      },
      "resultdb": {
        "current_invocation": {
          "name": "invocations/build:8945511751514863184",
          "update_token": "token"
        },
        "hostname": "rdbhost"
      }
    },
    "name": "foo.txt.get gerrit change numbers for foo.txt.change details for 363caa9:https://foo.googlesource.com/foo/+/363caa907186de786cb5292cd1ab7245da954815",
    "timeout": 600,
    "~followup_annotations": [
      "@@@STEP_NEST_LEVEL@2@@@",
      "@@@STEP_LOG_LINE@json.output@{@@@",
      "@@@STEP_LOG_LINE@json.output@  \"_number\": 12345@@@",
      "@@@STEP_LOG_LINE@json.output@}@@@",
      "@@@STEP_LOG_END@json.output@@@",
      "@@@STEP_LOG_LINE@json.input@{@@@",
      "@@@STEP_LOG_LINE@json.input@  \"change_id\": \"363caa907186de786cb5292cd1ab7245da954815\"@@@",
      "@@@STEP_LOG_LINE@json.input@}@@@",
      "@@@STEP_LOG_END@json.input@@@",
      "@@@STEP_LINK@gerrit link@https://foo-review.googlesource.com/q/363caa907186de786cb5292cd1ab7245da954815@@@"
    ]
  },
  {
    "cmd": [
      "vpython3",
      "-u",
      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
      "--json-output",
      "/path/to/tmp/json",
      "copy",
      "2d72510e447ab60a9728aeea2362d8be2cbd7789\n",
      "[START_DIR]/checkout/foo.txt"
    ],
    "infra_step": true,
    "luci_context": {
      "realm": {
        "name": "project:ci"
      },
      "resultdb": {
        "current_invocation": {
          "name": "invocations/build:8945511751514863184",
          "update_token": "token"
        },
        "hostname": "rdbhost"
      }
    },
    "name": "foo.txt.write new revision",
    "~followup_annotations": [
      "@@@STEP_NEST_LEVEL@1@@@",
      "@@@STEP_LOG_LINE@foo.txt@2d72510e447ab60a9728aeea2362d8be2cbd7789@@@",
      "@@@STEP_LOG_END@foo.txt@@@"
    ]
  },
  {
    "cmd": [],
    "name": "commit message",
    "~followup_annotations": [
      "@@@STEP_SUMMARY_TEXT@roll: foo.txt 255c632..3e30158 (3 commits)\n\n3e30158:https://foo-review.googlesource.com/c/foo/+/12345 fake A msg 0\n3380b83:https://foo-review.googlesource.com/c/foo/+/12345 fake A msg 1\n363caa9:https://foo-review.googlesource.com/c/foo/+/12345 fake A msg 2\n\nRolled-Repo: https://foo.googlesource.com/foo\nRolled-Commits: 255c6325c4c654..3e30158f2a7cac@@@"
    ]
  },
  {
    "name": "$result"
  }
]