New will construct a new X-Fast Trie with the given "size," that is the size of the universe of the trie.

Iterator will iterate of the results of a query.

XFastTrie is a datastructure for storing integers in a known universe, where universe size is determined by the bit size of the desired keys.

Entry defines items that can be inserted into the x-fast trie.

Entries is a typed list of Entry interfaces.