{"ast_node_type":"other","tokens":[{"end":99,"kind":"keyword","start":0,"text":".instantiate_bound_regions_with_erased(Binder::bind_with_vars(ty,"}]}
                    .instantiate_bound_regions_with_erased(Binder::bind_with_vars(ty, bound_vars));
                    .tcx
                let ty = match self.tcx.asyncness(fn_id) {