fetchCows method Null safety

dynamic fetchCows(
  1. BuildContext context
)

Implementation

fetchCows(BuildContext context) async {
  try {
    SearchCowResult searchCowResult = await ApiService().searchCow(context, keyword);

    if (searchCowResult.cows.isEmpty) {
      throw ErrorModel(statusCode: 0, error: -101, message: '검색 결과가 없습니다.');
    }
    if (page == 1) cows.clear();
    cows.addAll(searchCowResult.cows);
    _searchResultFetcher.sink.add(cows);
  } catch (e) {
    _searchResultFetcher.sink.addError(e);
  }
}