diff --git a/composer.json b/composer.json
index bc833324..ba3482bc 100644
--- a/composer.json
+++ b/composer.json
@@ -11,6 +11,8 @@
 		"cs:check": "php-cs-fixer fix --dry-run --diff",
 		"cs:fix": "php-cs-fixer fix",
 		"psalm": "psalm.phar --no-cache",
+		"psalm:update-baseline": "psalm.phar --threads=1 --update-baseline",
+		"psalm:update-baseline:force": "psalm.phar --threads=1 --update-baseline --set-baseline=tests/psalm-baseline.xml",
 		"test:unit": "phpunit --config tests/phpunit.xml",
 		"openapi": "generate-spec --verbose --allow-missing-docs"
 	},
diff --git a/lib/Command/ExportProject.php b/lib/Command/ExportProject.php
index a92ca0e2..7b87c921 100644
--- a/lib/Command/ExportProject.php
+++ b/lib/Command/ExportProject.php
@@ -14,6 +14,7 @@ namespace OCA\Cospend\Command;
 
 use OC\Core\Command\Base;
 use OCA\Cospend\Db\ProjectMapper;
+use OCA\Cospend\Service\CospendService;
 use OCA\Cospend\Service\LocalProjectService;
 use Symfony\Component\Console\Input\InputArgument;
 use Symfony\Component\Console\Input\InputInterface;
@@ -22,8 +23,9 @@ use Symfony\Component\Console\Output\OutputInterface;
 class ExportProject extends Base {
 
 	public function __construct(
-		private LocalProjectService $projectService,
-		private ProjectMapper       $projectMapper,
+		private LocalProjectService $localProjectService,
+		private CospendService $cospendService,
+		private ProjectMapper $projectMapper,
 	) {
 		parent::__construct();
 	}
@@ -48,7 +50,9 @@ class ExportProject extends Base {
 		$name = $input->getArgument('filename');
 		$dbProject = $this->projectMapper->find($projectId);
 		if ($dbProject !== null) {
-			$result = $this->projectService->exportCsvProject($projectId, $dbProject->getUserid(), $name);
+			$projectInfo = $this->localProjectService->getProjectInfoWithAccessLevel($projectId, $dbProject->getUserid());
+			$bills = $this->localProjectService->getBills($projectId);
+			$result = $this->cospendService->exportCsvProject($projectId, $dbProject->getUserid(), $projectInfo, $bills, $name);
 			if (array_key_exists('path', $result)) {
 				$output->writeln(
 					'Project "'.$projectId.'" exported in "'.$result['path'].
diff --git a/lib/Controller/PublicApiController.php b/lib/Controller/PublicApiController.php
index 6cab54c0..00e60ac0 100644
--- a/lib/Controller/PublicApiController.php
+++ b/lib/Controller/PublicApiController.php
@@ -929,7 +929,7 @@ class PublicApiController extends OCSController {
 	 *
 	 * @param string $token Project share token
 	 * @param array<array{order: int, id: int}> $order Array describing the categories ordering
-	 * @return DataResponse<Http::STATUS_OK|Http::STATUS_FORBIDDEN, '', array{}>
+	 * @return DataResponse<Http::STATUS_OK, '', array{}>|DataResponse<Http::STATUS_BAD_REQUEST, array<string, string>, array{}>
 	 *
 	 * 200: Categories order is saved
 	 * 403: Not saved
@@ -944,8 +944,6 @@ class PublicApiController extends OCSController {
 		try {
 			$this->localProjectService->saveCategoryOrder($this->projectId, $order);
 			return new DataResponse('');
-		} catch (CospendBasicException $e) {
-			return new DataResponse($e->data, $e->getCode());
 		} catch (\Throwable $e) {
 			return new DataResponse(['error' => $e->getMessage()], Http::STATUS_BAD_REQUEST);
 		}
@@ -971,8 +969,6 @@ class PublicApiController extends OCSController {
 		try {
 			$this->localProjectService->deleteCategory($this->projectId, $categoryId);
 			return new DataResponse($categoryId);
-		} catch (CospendBasicException $e) {
-			return new DataResponse($e->data, $e->getCode());
 		} catch (\Throwable $e) {
 			return new DataResponse(['error' => $e->getMessage()], Http::STATUS_BAD_REQUEST);
 		}
@@ -984,7 +980,7 @@ class PublicApiController extends OCSController {
 	 * @param string $token
 	 * @param string $name
 	 * @param float $rate
-	 * @return DataResponse<Http::STATUS_OK, int, array{}>
+	 * @return DataResponse<Http::STATUS_OK, int, array{}>|DataResponse<Http::STATUS_BAD_REQUEST, array<string, string>, array{}>
 	 */
 	#[NoAdminRequired]
 	#[PublicPage]
@@ -1008,8 +1004,9 @@ class PublicApiController extends OCSController {
 	 * @param int $currencyId
 	 * @param string $name
 	 * @param float $rate
-	 * @return DataResponse<Http::STATUS_OK, CospendCurrency, array{}>|DataResponse<Http::STATUS_FORBIDDEN, array<string, string>, array{}>
+	 * @return DataResponse<Http::STATUS_OK, CospendCurrency, array{}>|DataResponse<Http::STATUS_FORBIDDEN|Http::STATUS_NOT_FOUND|Http::STATUS_BAD_REQUEST, array<string, string>, array{}>
 	 * @throws Exception
+	 * @throws MultipleObjectsReturnedException
 	 */
 	#[NoAdminRequired]
 	#[PublicPage]
@@ -1024,7 +1021,12 @@ class PublicApiController extends OCSController {
 			);
 			return new DataResponse($currency);
 		} catch (CospendBasicException $e) {
-			return new DataResponse($e->data, $e->getCode());
+			if ($e->getCode() == Http::STATUS_FORBIDDEN) {
+				return new DataResponse($e->data, Http::STATUS_FORBIDDEN);
+			} elseif ($e->getCode() == Http::STATUS_NOT_FOUND) {
+				return new DataResponse($e->data, Http::STATUS_NOT_FOUND);
+			}
+			return new DataResponse($e->data, Http::STATUS_BAD_REQUEST);
 		}
 	}
 
@@ -1046,7 +1048,7 @@ class PublicApiController extends OCSController {
 			$this->localProjectService->deleteCurrency($this->projectId, $currencyId);
 			return new DataResponse('');
 		} catch (CospendBasicException $e) {
-			return new DataResponse($e->data, $e->getCode());
+			return new DataResponse($e->data, Http::STATUS_BAD_REQUEST);
 		} catch (\Throwable $e) {
 			return new DataResponse(['error' => $e->getMessage()], Http::STATUS_BAD_REQUEST);
 		}
diff --git a/lib/Db/CategoryMapper.php b/lib/Db/CategoryMapper.php
index b4c2c617..200c4e10 100644
--- a/lib/Db/CategoryMapper.php
+++ b/lib/Db/CategoryMapper.php
@@ -23,7 +23,7 @@ use OCP\IDBConnection;
  * @method Category mapRowToEntity(array $row)
  * @method Category findEntity(IQueryBuilder $query)
  * @method Category[] findEntities(IQueryBuilder $query)
- * @template-extends QBMapper<Share>
+ * @template-extends QBMapper<Category>
  */
 class CategoryMapper extends QBMapper {
 	public function __construct(IDBConnection $db) {
diff --git a/lib/Db/CurrencyMapper.php b/lib/Db/CurrencyMapper.php
index 1a7986a2..52265132 100644
--- a/lib/Db/CurrencyMapper.php
+++ b/lib/Db/CurrencyMapper.php
@@ -23,7 +23,7 @@ use OCP\IDBConnection;
  * @method Currency mapRowToEntity(array $row)
  * @method Currency findEntity(IQueryBuilder $query)
  * @method Currency[] findEntities(IQueryBuilder $query)
- * @template-extends QBMapper<Share>
+ * @template-extends QBMapper<Currency>
  */
 class CurrencyMapper extends QBMapper {
 	public function __construct(IDBConnection $db) {
diff --git a/lib/Db/PaymentModeMapper.php b/lib/Db/PaymentModeMapper.php
index 88b777da..cfde5026 100644
--- a/lib/Db/PaymentModeMapper.php
+++ b/lib/Db/PaymentModeMapper.php
@@ -23,7 +23,7 @@ use OCP\IDBConnection;
  * @method PaymentMode mapRowToEntity(array $row)
  * @method PaymentMode findEntity(IQueryBuilder $query)
  * @method PaymentMode[] findEntities(IQueryBuilder $query)
- * @template-extends QBMapper<Share>
+ * @template-extends QBMapper<PaymentMode>
  */
 class PaymentModeMapper extends QBMapper {
 	public function __construct(IDBConnection $db) {
diff --git a/lib/Db/ProjectMapper.php b/lib/Db/ProjectMapper.php
index b33cb1ab..13551a8b 100644
--- a/lib/Db/ProjectMapper.php
+++ b/lib/Db/ProjectMapper.php
@@ -56,6 +56,25 @@ class ProjectMapper extends QBMapper {
 		return $this->findEntity($qb);
 	}
 
+	/**
+	 * @param string $id
+	 * @return Project|null
+	 */
+	public function find(string $id): ?Project {
+		$qb = $this->db->getQueryBuilder();
+		$qb->select('*')
+			->from($this->getTableName())
+			->where(
+				$qb->expr()->eq('id', $qb->createNamedParameter($id, IQueryBuilder::PARAM_STR))
+			);
+
+		try {
+			return $this->findEntity($qb);
+		} catch (DoesNotExistException | MultipleObjectsReturnedException |\OCP\DB\Exception $e) {
+			return null;
+		}
+	}
+
 	/**
 	 * @param string $name
 	 * @param string $id
@@ -113,25 +132,6 @@ class ProjectMapper extends QBMapper {
 		return $insertedProject;
 	}
 
-	/**
-	 * @param string $id
-	 * @return Project|null
-	 */
-	public function find(string $id): ?Project {
-		$qb = $this->db->getQueryBuilder();
-		$qb->select('*')
-			->from($this->getTableName())
-			->where(
-				$qb->expr()->eq('id', $qb->createNamedParameter($id, IQueryBuilder::PARAM_STR))
-			);
-
-		try {
-			return $this->findEntity($qb);
-		} catch (DoesNotExistException | MultipleObjectsReturnedException |\OCP\DB\Exception $e) {
-			return null;
-		}
-	}
-
 	/**
 	 * @param string $userId
 	 * @return Project[]
diff --git a/lib/Service/CospendService.php b/lib/Service/CospendService.php
index 0f282c64..631c11c5 100644
--- a/lib/Service/CospendService.php
+++ b/lib/Service/CospendService.php
@@ -746,7 +746,9 @@ class CospendService {
 
 				$userFolder = $this->root->getUserFolder($uid);
 				if (!$userFolder->nodeExists($outPath . '/' . $exportName)) {
-					$this->localProjectService->exportCsvProject($dbProjectId, $uid, $exportName);
+					$projectInfo = $this->localProjectService->getProjectInfoWithAccessLevel($dbProjectId, $uid);
+					$bills = $this->localProjectService->getBills($dbProjectId);
+					$this->exportCsvProject($dbProjectId, $uid, $projectInfo, $bills, $exportName);
 				}
 			}
 			$req->closeCursor();
@@ -911,14 +913,15 @@ class CospendService {
 	 *
 	 * @param string $projectId
 	 * @param string $userId
+	 * @param array $projectInfo
+	 * @param array $bills
 	 * @param string|null $name
 	 * @return array
+	 * @throws InvalidPathException
+	 * @throws LockedException
 	 * @throws NoUserException
 	 * @throws NotFoundException
 	 * @throws NotPermittedException
-	 * @throws \OCP\DB\Exception
-	 * @throws InvalidPathException
-	 * @throws LockedException
 	 */
 	public function exportCsvProject(string $projectId, string $userId, array $projectInfo, array $bills, ?string $name = null): array {
 		// create export directory if needed
diff --git a/lib/Service/FederatedProjectService.php b/lib/Service/FederatedProjectService.php
index b6bb4694..5d397c78 100644
--- a/lib/Service/FederatedProjectService.php
+++ b/lib/Service/FederatedProjectService.php
@@ -27,6 +27,7 @@ class FederatedProjectService implements IProjectService {
 
 	private IClient $client;
 	public string $userId;
+	public string $USER_AGENT;
 
 	public function __construct(
 		IClientService $clientService,
@@ -102,7 +103,7 @@ class FederatedProjectService implements IProjectService {
 		$this->request($projectId, 'api/v1/public/projects/{token}/{password}', [], 'DELETE');
 	}
 
-	public function getProjectInfoWithAccessLevel(string $projectId, string $userId): ?array {
+	public function getProjectInfoWithAccessLevel(string $projectId, string $userId): array {
 		$projectInfo = $this->request($projectId, 'api/v1/public/projects/{token}/{password}');
 		$projectInfo['id'] = $projectId;
 		$projectInfo['federated'] = true;
diff --git a/lib/Service/IProjectService.php b/lib/Service/IProjectService.php
index 7766e74c..ef39b31f 100644
--- a/lib/Service/IProjectService.php
+++ b/lib/Service/IProjectService.php
@@ -31,9 +31,9 @@ interface IProjectService {
 	/**
 	 * @param string $projectId
 	 * @param string $userId
-	 * @return array|null
+	 * @return array
 	 */
-	public function getProjectInfoWithAccessLevel(string $projectId, string $userId): ?array;
+	public function getProjectInfoWithAccessLevel(string $projectId, string $userId): array;
 
 	/**
 	 * Get project statistics
diff --git a/lib/Service/LocalProjectService.php b/lib/Service/LocalProjectService.php
index 536498f7..da6064a2 100644
--- a/lib/Service/LocalProjectService.php
+++ b/lib/Service/LocalProjectService.php
@@ -318,19 +318,16 @@ class LocalProjectService implements IProjectService {
 	 * Get all project data
 	 *
 	 * @param string $projectId
-	 * @return CospendProjectInfoPlusExtra|null
+	 * @return CospendProjectInfoPlusExtra
 	 * @throws CospendBasicException
 	 * @throws DoesNotExistException
 	 * @throws MultipleObjectsReturnedException
 	 * @throws \OCP\DB\Exception
 	 */
-	public function getProjectInfo(string $projectId): ?array {
+	public function getProjectInfo(string $projectId): array {
 		try {
-			$dbProject = $this->projectMapper->find($projectId);
-		} catch (Exception | Throwable $e) {
-			return null;
-		}
-		if ($dbProject === null) {
+			$dbProject = $this->projectMapper->getById($projectId);
+		} catch (DoesNotExistException) {
 			throw new CospendBasicException('', Http::STATUS_NOT_FOUND, ['error' => 'project not found']);
 		}
 		$dbProjectId = $dbProject->getId();
@@ -374,10 +371,13 @@ class LocalProjectService implements IProjectService {
 	/**
 	 * @param string $projectId
 	 * @param string $userId
-	 * @return array|null
+	 * @return array
+	 * @throws CospendBasicException
+	 * @throws DoesNotExistException
+	 * @throws MultipleObjectsReturnedException
 	 * @throws \OCP\DB\Exception
 	 */
-	public function getProjectInfoWithAccessLevel(string $projectId, string $userId): ?array {
+	public function getProjectInfoWithAccessLevel(string $projectId, string $userId): array {
 		$projectInfo = $this->getProjectInfo($projectId);
 		$projectInfo['myaccesslevel'] = $this->getUserMaxAccessLevel($userId, $projectId);
 		return $projectInfo;
@@ -998,11 +998,10 @@ class LocalProjectService implements IProjectService {
 		$insertedBillId = $createdBill->getId();
 
 		// insert bill owers
-		$qb = $this->db->getQueryBuilder();
 		foreach ($owerIds as $owerId) {
 			$billOwer = new BillOwer();
 			$billOwer->setBillid($insertedBillId);
-			$billOwer->setMemberid($owerId);
+			$billOwer->setMemberid((int)$owerId);
 			$this->billOwerMapper->insert($billOwer);
 		}
 
@@ -1464,7 +1463,7 @@ class LocalProjectService implements IProjectService {
 	 * @param bool $active
 	 * @param string|null $color
 	 * @param string|null $userId
-	 * @return array
+	 * @return CospendMember
 	 * @throws CospendBasicException
 	 * @throws \OCP\DB\Exception
 	 */
@@ -2251,7 +2250,7 @@ class LocalProjectService implements IProjectService {
 			foreach ($owerIds as $owerId) {
 				$billOwer = new BillOwer();
 				$billOwer->setBillid($billId);
-				$billOwer->setMemberid($owerId);
+				$billOwer->setMemberid((int)$owerId);
 				$this->billOwerMapper->insert($billOwer);
 			}
 		}
@@ -2709,7 +2708,7 @@ class LocalProjectService implements IProjectService {
 	 * @throws \OCP\DB\Exception
 	 */
 	public function createPaymentMode(string $projectId, string $name, ?string $icon, string $color, ?int $order = 0): int {
-		$pm = new Category();
+		$pm = new PaymentMode();
 		$pm->setProjectid($projectId);
 		$pm->setName($name);
 		$pm->setOrder(is_null($order) ? 0 : $order);
@@ -2740,12 +2739,12 @@ class LocalProjectService implements IProjectService {
 	 * @param string $projectId
 	 * @param int $pmId
 	 * @return void
-	 * @throws CospendBasicException
+	 * @throws DoesNotExistException
 	 * @throws MultipleObjectsReturnedException
 	 * @throws \OCP\DB\Exception
 	 */
 	public function deletePaymentMode(string $projectId, int $pmId): void {
-		$pmToDelete = $this->getPaymentMode($projectId, $pmId);
+		$pmToDelete = $this->paymentModeMapper->getPaymentModeOfProject($projectId, $pmId);
 		$this->paymentModeMapper->delete($pmToDelete);
 
 		// then get rid of this pm in bills
@@ -2841,12 +2840,12 @@ class LocalProjectService implements IProjectService {
 	 * @param string $projectId
 	 * @param int $categoryId
 	 * @return void
-	 * @throws CospendBasicException
+	 * @throws DoesNotExistException
 	 * @throws MultipleObjectsReturnedException
 	 * @throws \OCP\DB\Exception
 	 */
 	public function deleteCategory(string $projectId, int $categoryId): void {
-		$categoryToDelete = $this->getCategory($projectId, $categoryId);
+		$categoryToDelete = $this->categoryMapper->getCategoryOfProject($projectId, $categoryId);
 		$this->categoryMapper->delete($categoryToDelete);
 
 		// then get rid of this category in bills
diff --git a/lib/UserMigration/UserMigrator.php b/lib/UserMigration/UserMigrator.php
index 1731d3e1..a797c14b 100644
--- a/lib/UserMigration/UserMigrator.php
+++ b/lib/UserMigration/UserMigrator.php
@@ -64,13 +64,14 @@ class UserMigrator implements IMigrator, ISizeEstimationMigrator {
 	public function export(IUser $user, IExportDestination $exportDestination, OutputInterface $output): void {
 		$output->writeln('Exporting Cospend projects in ' . self::PROJECTS_PATH . '…');
 		$userId = $user->getUID();
-		/** @var Project[] $projects */
 		$projects = $this->projectMapper->getProjects($userId);
 		foreach ($projects as $project) {
 			try {
 				$exportFilePath = self::PROJECTS_PATH . '/' . $project->getId() . '.csv';
 				$content = '';
-				foreach ($this->localProjectService->getJsonProject($project->getId()) as $chunk) {
+				$projectInfo = $this->localProjectService->getProjectInfoWithAccessLevel($project->getId(), $userId);
+				$bills = $this->localProjectService->getBills($project->getId());
+				foreach ($this->cospendService->getJsonProject($projectInfo, $bills) as $chunk) {
 					$content .= $chunk;
 				}
 				$exportDestination->addFileContents($exportFilePath, $content);
diff --git a/psalm.xml b/psalm.xml
index 3b348392..d473bbe9 100644
--- a/psalm.xml
+++ b/psalm.xml
@@ -32,6 +32,7 @@
 				<referencedClass name="Symfony\Component\Console\Input\InputInterface" />
 				<referencedClass name="Symfony\Component\Console\Output\OutputInterface" />
 				<referencedClass name="Doctrine\DBAL\Types\Type" />
+				<referencedClass name="OCA\FederatedFileSharing\AddressHandler" />
 			</errorLevel>
 		</UndefinedClass>
 		<UndefinedDocblockClass>
@@ -56,5 +57,9 @@
 		<file name="tests/stubs/oc_hooks_emitter.php" />
 		<file name="tests/stubs/oc_filesystem.php" />
 		<file name="tests/stubs/oc_core_command_base.php" />
+		<file name="tests/stubs/GuzzleHttp_Exception_ClientException.php" />
+		<file name="tests/stubs/GuzzleHttp_Exception_ConnectException.php" />
+		<file name="tests/stubs/GuzzleHttp_Exception_ServerException.php" />
+		<file name="tests/stubs/oca_federation_trustedservers.php" />
 	</stubs>
 </psalm>
diff --git a/tests/stubs/GuzzleHttp_Exception_ClientException.php b/tests/stubs/GuzzleHttp_Exception_ClientException.php
new file mode 100644
index 00000000..3edd3afc
--- /dev/null
+++ b/tests/stubs/GuzzleHttp_Exception_ClientException.php
@@ -0,0 +1,12 @@
+<?php
+/**
+ * SPDX-FileCopyrightText: 2023 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+
+namespace GuzzleHttp\Exception;
+
+class ClientException extends \RuntimeException {
+	public function getResponse() {
+	}
+}
diff --git a/tests/stubs/GuzzleHttp_Exception_ConnectException.php b/tests/stubs/GuzzleHttp_Exception_ConnectException.php
new file mode 100644
index 00000000..d5bc9442
--- /dev/null
+++ b/tests/stubs/GuzzleHttp_Exception_ConnectException.php
@@ -0,0 +1,10 @@
+<?php
+/**
+ * SPDX-FileCopyrightText: 2023 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+
+namespace GuzzleHttp\Exception;
+
+class ConnectException extends \RuntimeException {
+}
diff --git a/tests/stubs/GuzzleHttp_Exception_ServerException.php b/tests/stubs/GuzzleHttp_Exception_ServerException.php
new file mode 100644
index 00000000..c6822573
--- /dev/null
+++ b/tests/stubs/GuzzleHttp_Exception_ServerException.php
@@ -0,0 +1,15 @@
+<?php
+/**
+ * SPDX-FileCopyrightText: 2023 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+
+namespace GuzzleHttp\Exception;
+
+class ServerException extends \RuntimeException {
+
+	public function getResponse() {
+	}
+	public function hasResponse(): bool {
+	}
+}
diff --git a/tests/stubs/oca_federation_trustedservers.php b/tests/stubs/oca_federation_trustedservers.php
new file mode 100644
index 00000000..e2001702
--- /dev/null
+++ b/tests/stubs/oca_federation_trustedservers.php
@@ -0,0 +1,78 @@
+<?php
+/**
+ * SPDX-FileCopyrightText: 2024 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+namespace OCA\Federation;
+
+class TrustedServers {
+	/** after a user list was exchanged at least once successfully */
+	public const STATUS_OK = 1;
+	/** waiting for shared secret or initial user list exchange */
+	public const STATUS_PENDING = 2;
+	/** something went wrong, misconfigured server, software bug,... user interaction needed */
+	public const STATUS_FAILURE = 3;
+	/** remote server revoked access */
+	public const STATUS_ACCESS_REVOKED = 4;
+	public function __construct(\OCA\Federation\DbHandler $dbHandler, \OCP\Http\Client\IClientService $httpClientService, \Psr\Log\LoggerInterface $logger, \OCP\BackgroundJob\IJobList $jobList, \OCP\Security\ISecureRandom $secureRandom, \OCP\IConfig $config, \OCP\EventDispatcher\IEventDispatcher $dispatcher, \OCP\AppFramework\Utility\ITimeFactory $timeFactory) {
+	}
+	/**
+	 * Add server to the list of trusted servers
+	 */
+	public function addServer(string $url) : int {
+	}
+	/**
+	 * Get shared secret for the given server
+	 */
+	public function getSharedSecret(string $url) : string {
+	}
+	/**
+	 * Add shared secret for the given server
+	 */
+	public function addSharedSecret(string $url, string $sharedSecret) : void {
+	}
+	/**
+	 * Remove server from the list of trusted servers
+	 */
+	public function removeServer(int $id) : void {
+	}
+	/**
+	 * Get all trusted servers
+	 *
+	 * @return list<array{id: int, url: string, url_hash: string, shared_secret: ?string, status: int, sync_token: ?string}>
+	 * @throws Exception
+	 */
+	public function getServers() {
+	}
+	/**
+	 * Check if given server is a trusted Nextcloud server
+	 */
+	public function isTrustedServer(string $url) : bool {
+	}
+	/**
+	 * Set server status
+	 */
+	public function setServerStatus(string $url, int $status) : void {
+	}
+	/**
+	 * Get server status
+	 */
+	public function getServerStatus(string $url) : int {
+	}
+	/**
+	 * Check if URL point to a ownCloud/Nextcloud server
+	 */
+	public function isNextcloudServer(string $url) : bool {
+	}
+	/**
+	 * Check if ownCloud/Nextcloud version is >= 9.0
+	 * @throws HintException
+	 */
+	protected function checkNextcloudVersion(string $status) : bool {
+	}
+	/**
+	 * Check if the URL contain a protocol, if not add https
+	 */
+	protected function updateProtocol(string $url) : string {
+	}
+}