Sort aSet orMap in itsnatural order

Sorting is performed in memory, by Java'sTreeSet orTreeMap, and is maintained by any operation that mutates the collection.

• UseSortComparator to sort the collection in memory using aComparator.
• UseOrderBy to order using an expression written in HQL.
• UseSQLOrder to order using an expression written in native SQL.

It is illegal to use bothSortNatural andSortComparator.