+ /** In the event that the mode should be given a parameter, and no parameter was provided, this method is called.
+ * This allows you to give special information to the user, or handle this any way you like.
+ * @param user The user issuing the mode change
+ * @param dest For user mode changes, the target of the mode. For channel mode changes, NULL.
+ * @param channel For channel mode changes, the target of the mode. For user mode changes, NULL.
+ */
+ virtual void OnParameterMissing(User* user, User* dest, Channel* channel);
+