---

	Class	Description
	ConcurrencyError	The error throws when methods that have detected concurrent modification of an object when such modification is not permissible.
	InvalidChannelError	The error throws when an invalid channel is find.
	InvalidFilterError	The error throws when an invalid filter is find.
	NonUniqueKeyError	The error throws when a key is non unique.
	NoSuchElementError	Thrown by an Iterator to indicate that there are no more elements in the iteration.