{"ast_node_type":"function","tokens":[{"end":88,"kind":"keyword","start":0,"text":"pub"}]}
    pub fn map_mod_id<New>(self, f: impl FnOnce(ModId) -> New) -> StrippedCfgItem<New> {
impl<ModId> StrippedCfgItem<ModId> {
        StrippedCfgItem { parent_module: f(self.parent_module), ident: self.ident, cfg: self.cfg }