/// <summary>
/// Find an immediate sub-category of the given Name.
/// </summary>
/// <param name="Name"></param>
/// <returns></returns>
public Category FindChild(string Name)
{
Category category = children.SingleOrDefault(i => i.Name == Name);
if (category == null)
{
category = new Category() { Name = Name };
children.Add(category);
}
return category;
}