FileDownloader constructor
FileDownloader({
- PersistentStorage? persistentStorage,
Implementation
factory FileDownloader({PersistentStorage? persistentStorage}) {
assert(
_singleton == null || persistentStorage == null,
'You can only supply a persistentStorage on the very first call to '
'FileDownloader()');
_singleton ??= FileDownloader._internal(
persistentStorage ?? LocalStorePersistentStorage());
return _singleton!;
}