code: function moveSequenceAfter(slotPrev, slotFirst, slotLast) {
                      slotFirst.prev.next = slotLast.next;
                      slotLast.next.prev = slotFirst.prev;
  
                      slotFirst.prev = slotPrev;
                      slotLast.next = slotPrev.next;
  
                      slotPrev.next = slotFirst;
                      slotLast.next.prev = slotLast;
  
                      return true;
                  }
docs: Does a little careful surgery to the slot sequence from slotFirst to slotLast after slotPrev