{
  "synthetic": true,
  "function": "grams",
  "scope": "Finite offline teaching cases only; no live account/platform access.",
  "cases": [
    {
      "id": 1,
      "args": [
        1.25,
        "kg"
      ],
      "expected": 1250
    },
    {
      "id": 2,
      "args": [
        1250,
        "g"
      ],
      "expected": 1250
    },
    {
      "id": 3,
      "args": [
        1.25,
        null
      ],
      "expected": null
    }
  ]
}