copy method
Returns a shallow copy of the receiver.
Override this method in all subclasses, return its own type.
Implementation
@override
UnicodeCharacterParser copy() => UnicodeCharacterParser(predicate, message);
copy method
Returns a shallow copy of the receiver.
Override this method in all subclasses, return its own type.
@override
UnicodeCharacterParser copy() => UnicodeCharacterParser(predicate, message);