opentofu/internal/configs/testdata/valid-files/resources.tf.json

{
  "resource": {
    "test_object": {
      "a": {
        "count": 1,
        "test_string": "new"
      },
      "b": {
        "count": 1,
        "lifecycle": {
          "replace_triggered_by": [
            "test_object.a[count.index].test_string"
          ]
        }
      }
    }
  }
}