private void PrepareCreateWindowModel <T>(RequestEditWindowModel <T> editWindowModel) where T : class
{
editWindowModel.Stores.Containers = _containerService.GetAllFreeContainerModels(null)
.Select(x => new SelectListItem {
Value = x.Id.ToString(), Text = $"{x.Number} ({x.ContainerType.Name})"
})
.ToList()
.AddEmptyElement();
}