copy method
Returns a shallow copy of the receiver.
Override this method in all subclasses, return its own type.
Implementation
@override
ChoiceParser<R> copy() =>
ChoiceParser<R>(children, failureJoiner: failureJoiner);
Returns a shallow copy of the receiver.
Override this method in all subclasses, return its own type.
@override
ChoiceParser<R> copy() =>
ChoiceParser<R>(children, failureJoiner: failureJoiner);