copy method
Creates a shallow copy of this parser.
Overridden in subclasses to return an instance of the specific parser type.
Implementation
@override
SettableParser<R> copy() => SettableParser<R>(delegate);
Creates a shallow copy of this parser.
Overridden in subclasses to return an instance of the specific parser type.
@override
SettableParser<R> copy() => SettableParser<R>(delegate);