The type of the elements of the indexed collection.
Remarks
The result of any index search operation, IndexQuery<T,TKey> can be grouped by applying IndexQuery<T,TKey>.GroupByKey. It is grouped by the key that was used to perform the search operation. For example, customers.Indexes(c => c.City).All().GroupByKey(); customers.Indexes(c => c.City).FindBetween("A", "Z").GroupByKey();