contains
Returns whether time is directly selectable under timeFormat.
This predicate does not validate the item-list configuration; it only checks membership.
Returns whether hour and minute are directly selectable under timeFormat.
hour is interpreted as hour-of-day in 0..23. Values outside the supported hour or minute ranges return false.
Returns whether displayHour, minute, and period are directly selectable in 12-hour mode.
displayHour is interpreted as the format-hour shown to users in 1..12. Values outside the supported display-hour or minute ranges return false.