{"ast_node_type":"other","tokens":[{"end":70,"kind":"keyword","start":0,"text":"ItemKind::TyAlias(_,"}]}
            ItemKind::TyAlias(_, _, self_ty) => icx.lower_ty(self_ty),
            }
            ItemKind::Impl(hir::Impl { self_ty, .. }) => match self_ty.find_self_aliases() {