{"ast_node_type":"function","tokens":[{"end":58,"kind":"keyword","start":0,"text":"fn"}]}
    fn insert(&mut self, id: LintId, lvl: LevelAndSource);
    fn current_specs(&self) -> &FxIndexMap<LintId, LevelAndSource>;
    fn get_lint_level(&self, lint: &'static Lint, sess: &Session) -> LevelAndSource;