/// <summary>
/// Adds the equivalent label.
/// </summary>
/// <returns></returns>
public EquivalentLabel AddEquivalentLabel()
{
var label = new EquivalentLabel();
Add(label);
return(label);
}
/// <summary>
/// Adds the item.
/// </summary>
/// <param name="label">The label.</param>
public void AddItem(EquivalentLabel label)
{
Add(label);
}