fromJson static method

Implementation

// ignore: prefer_constructors_over_static_methods
static Instance? fromJson(dynamic value) {
  if (value is Map) {
    final json = value.cast<String, dynamic>();

    // Ensure that the map contains the required keys.
    // Note 1: the values aren't checked for validity beyond being non-null.
    // Note 2: this code is stripped in release mode!
    assert(() {
      requiredKeys.forEach((key) {
        assert(json.containsKey(key),
            'Required key "Instance[$key]" is missing from JSON.');
        assert(json[key] != null,
            'Required key "Instance[$key]" has a null value in JSON.');
      });
      return true;
    }());

    return Instance(
      object: InstanceObjectEnum.fromJson(json[r'object'])!,
      id: mapValueOfType<String>(json, r'id')!,
      environmentType: mapValueOfType<String>(json, r'environment_type')!,
      allowedOrigins: json[r'allowed_origins'] is Iterable
          ? (json[r'allowed_origins'] as Iterable)
              .cast<String>()
              .toList(growable: false)
          : const [],
    );
  }
  return null;
}