/// <summary> /// Saves persistent keys to a file asynchronously. The server does this automatically. /// </summary> /// <param name="filename">The file name.</param> /// <exception cref="PersistentException">Thrown if there is an error /// saving the file.</exception> public static async Task <string> SavePersistentAsync(string filename) { return(await NtCore.SavePersistentAsync(filename).ConfigureAwait(false)); }