fetchSingle<T> method
Implementation
Future<T?> fetchSingle<T>(
[T Function(Map<String?, dynamic>)? factory]) async {
if (_fetchSingleFunc == null) {
throw Exception('QueryBuilder@fetchSingle _fetchSingleFunc not defined');
}
//throw UnsupportedOperationException('`fetchSingle` not implemented');
return _fetchSingleFunc!(factory);
}