public void DublicatedPages()
        {
            var dublicated = _pageManager.DublicatePages(_groupDao.SourcePages, _groupDao.Group.Count);
            int remainded  = dublicated.Length % Infrastructure.Common.Properties.GetInstance().Groups;

            _groupDao.DublicatedPages = remainded != 0
                ? _pageManager.AddEmptyPages(dublicated, Infrastructure.Common.Properties.GetInstance().Groups - remainded)
                : dublicated;
        }