* iterated are the individual lists created, and these are not retained after iteration.
   *
   * @param sets the sets to choose elements from, in the order that the elements chosen from those
   *     sets should appear in the resulting lists
   * @param <B> any common base class shared by all axes (often just {@link Object})

            // * if the time picker is enabled, apply the hour/minute/second from the select boxes to the clicked date
            // * if autoapply is enabled, and an end date was chosen, apply the selection
            // * if single date picker mode, and time picker isn't enabled, apply the selection immediately
            // * if one of the inputs above the calendars was focused, cancel that manual input

history:before{content:"\f1da"}.fa-hockey-puck:before{content:"\f453"}.fa-holly-berry:before{content:"\f7aa"}.fa-home:before{content:"\f015"}.fa-hooli:before{content:"\f427"}.fa-hornbill:before{content:"\f592"}.fa-horse:before{content:"\f6f0"}.fa-horse-head:before{content:"\f7ab"}.fa-hospital:before{content:"\f0f8"}.fa-hospital-alt:before{content:"\f47d"}.fa-hospital-symbol:before{content:"\f47e"}.fa-hot-tub:before{content:"\f593"}.fa-hotdog:before{content:"\f80f"}.fa-hotel:before{content:"\f594...

 * [Set]. Doing so is both inefficient because equality may require a DNS lookup, and incorrect
 * because unequal URLs may be equal because of how they are hosted.
 *
 * ### Equal URLs should be equal
 *
 * These two URLs are semantically identical, but `java.net.URI` disagrees:
 *
 *  * http://host:80/
 *
 *  * http://host
 *

   * and accesses that were performed on the map. The queue is drained on writes and when it exceeds
   * its capacity threshold.
   *
   * The Least Recently Used page replacement algorithm was chosen due to its simplicity, high hit
   * rate, and ability to be implemented with O(1) time complexity. The initial LRU implementation
   * operates per-segment rather than globally for increased implementation simplicity. We expect