16 files declare their use of Settings in Simple XML sitemap 4.x

CustomLinksForm.php in src/Form/CustomLinksForm.php

CustomUrlGenerator.php in src/Plugin/simple_sitemap/UrlGenerator/CustomUrlGenerator.php

EntityManager.php in src/Manager/EntityManager.php

EntityMenuLinkContentUrlGenerator.php in src/Plugin/simple_sitemap/UrlGenerator/EntityMenuLinkContentUrlGenerator.php

EntityUrlGenerator.php in src/Plugin/simple_sitemap/UrlGenerator/EntityUrlGenerator.php

EntityUrlGeneratorBase.php in src/Plugin/simple_sitemap/UrlGenerator/EntityUrlGeneratorBase.php

FormHelper.php in src/Form/FormHelper.php

Generator.php in src/Manager/Generator.php

QueueWorker.php in src/Queue/QueueWorker.php

SettingsForm.php in src/Form/SettingsForm.php

SimpleSitemapFormBase.php in src/Form/SimpleSitemapFormBase.php

SimpleSitemapStorage.php in src/Entity/SimpleSitemapStorage.php

SitemapGeneratorBase.php in src/Plugin/simple_sitemap/SitemapGenerator/SitemapGeneratorBase.php

StatusForm.php in src/Form/StatusForm.php

UrlGeneratorBase.php in src/Plugin/simple_sitemap/UrlGenerator/UrlGeneratorBase.php

ViewsUrlGenerator.php in modules/simple_sitemap_views/src/Plugin/simple_sitemap/UrlGenerator/ViewsUrlGenerator.php