copy method
Returns a shallow copy of the receiver.
Override this method in all subclasses, return its own type.
Implementation
@override
SequenceParser3<R1, R2, R3> copy() =>
SequenceParser3<R1, R2, R3>(parser1, parser2, parser3);
Returns a shallow copy of the receiver.
Override this method in all subclasses, return its own type.
@override
SequenceParser3<R1, R2, R3> copy() =>
SequenceParser3<R1, R2, R3>(parser1, parser2, parser3);