/// <summary>
/// Удалить характеристику
/// </summary>
/// <param name="specification"></param>
public void RemoveSpecification(GroupSpecification specification)
{
if(specification!=null && specifications.Contains(specification))
{
specifications.Remove(specification);
}
}
public void AddSpecification(GroupSpecification specification)
{
if (specifications.All(f => f.Specification.Id != specification.Id))
{
specification.Group = this;
specifications.Add(specification);
}
}
