53         public void Remove(TLeft left)  in Remove()  argument
56             TryRemove(left, out fake);  in Remove()
59         public bool TryRemove(TLeft left, out TRight right)  in TryRemove()  argument
66                 if(!newLefts.TryGetValue(left, out right))  in TryRemove()
72                 newLefts.Remove(left);  in TryRemove()
80                 OnItemRemoved(left, right);  in TryRemove()
106         public void Add(TLeft left, TRight right)  in Add()  argument
108             Add(right, left);  in Add()
111         public void Add(TRight right, TLeft left)  in Add()  argument
118                 newRights.Add(right, left);  in Add()
119                 newLefts.Add(left, right);  in Add()
130                     ia(left, right);  in Add()
135         public bool ExistsEither(TRight right, TLeft left)  in ExistsEither()  argument
137             return ExistsEither(left, right);  in ExistsEither()
140         public bool ExistsEither(TLeft left, TRight right)  in ExistsEither()  argument
151             return copyOfLefts.ContainsKey(left) || copyOfRights.ContainsKey(right);  in ExistsEither()
154         public bool Exists(TLeft left)  in Exists()  argument
157             return copy.ContainsKey(left);  in Exists()
160         public bool TryGetValue(TLeft left, out TRight right)  in TryGetValue()  argument
163             if(left == null)  in TryGetValue()
168             return copy.TryGetValue(left, out right);  in TryGetValue()
171         public bool TryGetValue(TRight right, out TLeft left)  in TryGetValue()  argument
173             left = default(TLeft);  in TryGetValue()
179             return copy.TryGetValue(right, out left);  in TryGetValue()
213         private void OnItemRemoved(TLeft left, TRight right)  in OnItemRemoved()  argument
218                 itemRemoved(left, right);  in OnItemRemoved()