{"ast_node_type":"import","tokens":[{"end":109,"kind":"keyword","start":0,"text":"//"}]}
                        // We may also get a `Trait` or `TraitAlias` because of how generics `Self` parameter
                        DefKind::TyParam => Some(self.tcx.object_lifetime_default(param.def_id)),
                        // works. Ignore it because it can't have a meaningful lifetime default.