public virtual void Load(TModel model, bool isNew, object parameter = null)
{
//детали
DetailsViewModel.Load(model, UnitOfWork);
DetailsViewModel.Item.PropertyChanged += ItemOnPropertyChanged;
//группы юнитов
var units = GetUnits(model, parameter);
GroupsViewModel.Load(units, DetailsViewModel.Item, UnitOfWork, isNew);
GroupsViewModel.GroupChanged += OnGroupChanged;
AfterUnitsLoading();
SaveCommand.RaiseCanExecuteChanged();
}