putBytes method
Implementation
Future<FileReference> putBytes(Uint8List bytes, String filename) async {
assert(!filename.contains("/"));
final Directory dir = await _directory;
dir.createSync(recursive: true);
final file =
await ScientISSTdb._getFile(ScientISSTdb._joinPaths(_path, filename));
file.writeAsBytesSync(bytes);
return FileReference._(path: filename, parent: this);
}