[
  {
    "start": 0,
    "end": 14,
    "dollar": true,
    "params": [
      {
        "number": 1,
        "location": 7,
        "origin": 7,
        "name": "a",
        "named": true
      },
      {
        "number": 2,
        "location": 11,
        "origin": 22,
        "name": "b",
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      }
    ]
  }
]