Optional constructor
Optional({})
Implementation
Optional({
super.apply,
super.regex,
super.regexGroup,
super.regexReplace,
super.regexReplaceWith,
super.replaceFirst,
super.replaceAll,
super.cropStart,
super.cropEnd,
super.prepend,
super.append,
super.match,
super.nth,
super.splitBy,
});