check at condition

		$this->userManager->callForAllUsers(function (IUser $user) use ($ipAddress, $isDryRun, $output, &$stats) {

			$username = $user->getUID();

			// Get user metadata from LDAP to obtain usernameWithoutDomain

			$userMetadata = $this->ldapConnectionService->getUserMetadata($username);

			$usernameWithoutDomain = $userMetadata['usernameWithoutDomain'] ?? $username;

			// Check if user is missing from common database

			if ($this->userService->isUsernameTaken($username)) {

			if ($this->userService->isUsernameTaken($usernameWithoutDomain)) {

				return; // Skip if already exists

			}