Use ListLandingZones with an AWS SDK

    /// <summary>
    /// List the AWS Control Tower landing zones for an account.
    /// </summary>
    /// <returns>A list of LandingZoneSummary objects.</returns>
    public async Task<List<LandingZoneSummary>> ListLandingZonesAsync()
    {
        try
        {
            var landingZones = new List<LandingZoneSummary>();

            var landingZonesPaginator = _controlTowerService.Paginators.ListLandingZones(new ListLandingZonesRequest());

            await foreach (var response in landingZonesPaginator.Responses)
            {
                landingZones.AddRange(response.LandingZones);
            }

            return landingZones;
        }
        catch (AmazonControlTowerException ex)
        {
            Console.WriteLine($"Couldn't list landing zones. Here's why: {ex.ErrorCode}: {ex.Message}");
            throw;
        }
    }

    /**
     * Lists all landing zones using pagination to retrieve complete results.
     *
     * @return a list of all landing zones
     * @throws ControlTowerException if a service-specific error occurs
     * @throws SdkException          if an SDK error occurs
     */
    public CompletableFuture<List<LandingZoneSummary>> listLandingZonesAsync() {
        System.out.println("Starting list landing zones paginator…");

        ListLandingZonesRequest request = ListLandingZonesRequest.builder().build();
        ListLandingZonesPublisher paginator = getAsyncClient().listLandingZonesPaginator(request);
        List<LandingZoneSummary> landingZones = new ArrayList<>();

        return paginator.subscribe(response -> {
                    if (response.landingZones() != null && !response.landingZones().isEmpty()) {
                        response.landingZones().forEach(lz -> {
                            System.out.println("Landing zone ARN: " + lz.arn());
                            landingZones.add(lz);
                        });
                    } else {
                        System.out.println("Page contained no landing zones.");
                    }
                })
                .thenRun(() -> System.out.println("Successfully retrieved "+ landingZones.size() + " landing zones." ))
                .thenApply(v -> landingZones)
                .exceptionally(ex -> {
                    Throwable cause = ex.getCause() != null ? ex.getCause() : ex;

                    if (cause instanceof ControlTowerException e) {
                        String errorCode = e.awsErrorDetails().errorCode();
                        switch (errorCode) {
                            case "AccessDeniedException":
                                throw new CompletionException(
                                        "Access denied when listing landing zones: " + e.getMessage(), e);
                            default:
                                throw new CompletionException(
                                        "Error listing landing zones: " + e.getMessage(), e);
                        }
                    }

                    if (cause instanceof SdkException) {
                        throw new CompletionException(
                                "SDK error listing landing zones: " + cause.getMessage(), cause);
                    }

                    throw new CompletionException("Failed to list landing zones", cause);
                });
    }

class ControlTowerWrapper:
    """Encapsulates AWS Control Tower and Control Catalog functionality."""

    def __init__(
        self, controltower_client: boto3.client, controlcatalog_client: boto3.client
    ):
        """
        :param controltower_client: A Boto3 Amazon ControlTower client.
        :param controlcatalog_client: A Boto3 Amazon ControlCatalog client.
        """
        self.controltower_client = controltower_client
        self.controlcatalog_client = controlcatalog_client

    @classmethod
    def from_client(cls):
        controltower_client = boto3.client("controltower")
        controlcatalog_client = boto3.client("controlcatalog")
        return cls(controltower_client, controlcatalog_client)


    def list_landing_zones(self):
        """
        Lists all landing zones.

        :return: List of landing zones.
        :raises ClientError: If the listing operation fails.
        """
        try:
            paginator = self.controltower_client.get_paginator("list_landing_zones")
            landing_zones = []
            for page in paginator.paginate():
                landing_zones.extend(page["landingZones"])
            return landing_zones

        except ClientError as err:
            if err.response["Error"]["Code"] == "AccessDeniedException":
                logger.error(
                    "Access denied. Please ensure you have the necessary permissions."
                )
            else:
                logger.error(
                    "Couldn't list landing zones. Here's why: %s: %s",
                    err.response["Error"]["Code"],
                    err.response["Error"]["Message"],
                )
            raise

    DATA lt_landing_zones TYPE /aws1/cl_cttlandingzonesummary=>tt_landingzonesummaries.
    DATA lv_nexttoken TYPE /aws1/cttstring.

    " List all landing zones using pagination
    DO.
      DATA(lo_output) = io_ctt->listlandingzones(
        iv_nexttoken = lv_nexttoken
      ).

      APPEND LINES OF lo_output->get_landingzones( ) TO lt_landing_zones.

      lv_nexttoken = lo_output->get_nexttoken( ).
      IF lv_nexttoken IS INITIAL.
        EXIT.
      ENDIF.
    ENDDO.

    ot_landing_zones = lt_landing_zones.
    MESSAGE 'Listed landing zones successfully.' TYPE 'I'.