operator [] method

dynamic operator [](dynamic indexKey)

Implementation

operator [](indexKey) {
  if (result.containsKey(indexKey)) {
    return result[indexKey];
  }

  final subIndex = int.tryParse(indexKey.toString());
  if (subIndex == null || subIndex < 0) {
    throw ArgumentError("Invalid index key $indexKey");
  }
  return nestedResult(subIndex);
}