+ number ret = bindings.CommitmentSigned_new(InternalUtils.check_arr_len(channel_id_arg, 32), InternalUtils.check_arr_len(signature_arg, 64), htlc_signatures_arg != null ? Arrays.stream(htlc_signatures_arg).map(htlc_signatures_arg_conv_12 -> InternalUtils.check_arr_len(htlc_signatures_arg_conv_12, 64)).toArray(Uint8Array[]::new) : null);