deleteFilesOriginal function
Implementation
Future<void> deleteFilesOriginal(Reference ref) async {
Reference reference = ref;
ListResult result = await reference.listAll();
for (var item in result.items) {
await ref.child(item.name).delete();
}
var dirs = result.prefixes;
for (var dir in dirs) {
await deleteFilesOriginal(reference.child(dir.name));
}
}