public virtual void AddSubordinate(UnitBase subordinate)
{
Contract.Requires<ArgumentNullException>(subordinate != null);
Contract.Requires<ArgumentException>(!Subordinates.Contains(subordinate));
this._subordinates.Add(subordinate);
subordinate.Superior = this;
}
/// <summary>
/// Removes a subordinate from the list of subordinates.
/// </summary>
/// <param name="subordinate">The subordinate to remove.</param>
/// <exception cref="ArgumentNullException">When <paramref name="subordinate" /> is null.</exception>
/// <exception cref="ArgumentException">When <paramref name="subordinate" /> is not on the list.</exception>
public virtual void RemoveSubordinate(UnitBase subordinate)
{
Contract.Requires<ArgumentNullException>(subordinate != null);
Contract.Requires<ArgumentException>(Subordinates.Contains(subordinate));
this._subordinates.Remove(subordinate);
subordinate.Superior = null;
}