metadata method
Implementation
Parser<AnnotationNode> metadata() => seq3(
char('@'),
ref0(rawIdentifier).plusSeparated(char('.')).flatten(),
[
(seq2(pattern(' \t').star(), char('(')).and() & ref0(argumentList)).map(
(l) => l[1] as List<ArgumentNode>,
),
ref0(hiddenStuffWhitespace).star().map((_) => const <ArgumentNode>[]),
].toChoiceParser(),
).map3((_, name, args) => AnnotationNode(name: name, arguments: args));