{"ast_node_type":"variable","tokens":[{"end":86,"kind":"keyword","start":0,"text":"let"}]}
        let Some(LintGroup { lint_ids, .. }) = self.lint_groups.get(group_name) else {
    pub fn register_group_alias(&mut self, group_name: &'static str, alias: &'static str) {
            bug!("group alias {alias:?} points to unregistered group {group_name:?}")