A sorted set of Individuals which match the search query.
This is the canonical set of Individuals provided by this view. It is sorted by match strength, with the individual who is the best match to the search query as the Gee.SortedSet.first element of the set.
Match strengths are not publicly exposed, as they are on an arbitrary scale. To compare two matching individuals for match strength, check for membership of one of them in the Gee.SortedSet.head_set of the other.