{"ast_node_type":"other","tokens":[{"end":98,"kind":"keyword","start":0,"text":"tcx.instantiate_bound_regions_with_erased(closure_args.sig()).inputs()[0];"}]}
                        tcx.instantiate_bound_regions_with_erased(closure_args.sig()).inputs()[0];
                    let tuple_args =
                    (trait_id, Some(tuple_args))