{"ast_node_type":"other","tokens":[{"end":98,"kind":"keyword","start":0,"text":"provided_arg_tys.get(ProvidedIdx::from_usize(arg_idx.index()"}]}
                                provided_arg_tys.get(ProvidedIdx::from_usize(arg_idx.index() - 1))
                            && let Some((_, prev)) =
                        {