An iterable is a sequence of values.

A group of functions for working with Maps.

A collection of functions for operating upon Entries.

A pack of functions for working with Sets.

A collection of methods for working with Objects.

A collection of functions for operating upon Lists.

IEntries is an iterable list of key-value pairs, with unique keys.

ILists is a pair of key iterable list and value iterable list, with unique keys.