{"ast_node_type":"other","tokens":[{"end":87,"kind":"keyword","start":0,"text":"real_idxs[src_input_idx]"}]}
                        real_idxs[src_input_idx] = Some((dest_arg_idx, dst_input_idx));
                        let dest_arg_idx = self.expected_indices[dst];
                        matched_inputs[dest_arg_idx] = Some(src_input_idx);