copy method
Copy a file / folder from A to B If copied the folder (A > B), it will copy all the contents of folder A to folder B. Some webdav services have been tested and found to delete the original contents of the B folder!!!
Implementation
Future<void> copy(String oldPath, String newPath, bool overwrite,
[CancelToken? cancelToken]) {
return this.c.wdCopyMove(this, oldPath, newPath, true, overwrite);
}