LeafReaderContextPartition
Holds information about a specific leaf context and the corresponding range of doc ids to search within. Used to optionally search across partitions of the same segment concurrently.
A partition instance can be created via .createForEntireSegment, in which case it will target the entire provided LeafReaderContext. A true partition of a segment can be created via .createFromAndTo providing the minimum doc id (including) to search as well as the max doc id (excluding).