Specifies the type of Seek to execute.
Seeks the first key equal to KeyValues.
Seeks the last key equal to KeyValues.
Seeks either a key equal to KeyValues or just after where that match would have occurred.
Seeks a key just after where a match with KeyValues would have occurred.
Seeks either a key equal to KeyValuesor just before where that match would have occurred.
Seeks a key just before where a match with KeyValues would have occurred.