/// <summary>
/// Add folder and it´s subfolders.
/// </summary>
/// <param name="folder">Path to folder to add.</param>
/// <param name="progressInfo">Returns information about progress.</param>
public void AddSubFolders(ref ProgressInfo progressInfo, string path)
{
progressInfo.DefaultSetting();
progressInfo.Start();
AddSubFolders(path, ref progressInfo);
progressInfo.Complete();
}
