updateTimed method
Same as update, but calls checkEntry first.
Implementation
V updateTimed(
K key,
V Function(V value) update, {
V Function()? ifAbsent,
DateTime? now,
Duration? keyTimeout,
}) {
checkEntry(key, now: now, keyTimeout: keyTimeout);
return this.update(key, update, ifAbsent: ifAbsent);
}