startWriteStream method
Implementation
@override
Future<SafWriteStreamInfo> startWriteStream(
Uri treeUri, String fileName, String mime) async {
var session = _nextSession().toString();
var uri = await methodChannel.invokeMethod<String>('startWriteStream', {
'treeUri': treeUri.toString(),
'session': session,
'fileName': fileName,
'mime': mime
});
if (uri == null) {
throw Exception('Unexpected empty Uri');
}
return SafWriteStreamInfo(session, Uri.parse(uri));
}