AccountSettingsForm.php in core/modules/user/src/AccountSettingsForm.php
AdvancedSettingsForm.php in core/modules/views_ui/src/Form/AdvancedSettingsForm.php
BasicSettingsForm.php in core/modules/views_ui/src/Form/BasicSettingsForm.php
BookSettingsForm.php in core/modules/book/src/Form/BookSettingsForm.php
FileSystemForm.php in core/modules/system/src/Form/FileSystemForm.php
FormTestArgumentsObject.php in core/modules/system/tests/modules/form_test/src/FormTestArgumentsObject.php
FormTestControllerObject.php in core/modules/system/tests/modules/form_test/src/FormTestControllerObject.php
FormTestObject.php in core/modules/system/tests/modules/form_test/src/FormTestObject.php
FormTestServiceObject.php in core/modules/system/tests/modules/form_test/src/FormTestServiceObject.php
ForumSettingsForm.php in core/modules/forum/src/ForumSettingsForm.php
ImageToolkitForm.php in core/modules/system/src/Form/ImageToolkitForm.php
LocaleSettingsForm.php in core/modules/locale/src/Form/LocaleSettingsForm.php
LoggingForm.php in core/modules/system/src/Form/LoggingForm.php
NegotiationBrowserForm.php in core/modules/language/src/Form/NegotiationBrowserForm.php
NegotiationConfigureForm.php in core/modules/language/src/Form/NegotiationConfigureForm.php
NegotiationSelectedForm.php in core/modules/language/src/Form/NegotiationSelectedForm.php
NegotiationSessionForm.php in core/modules/language/src/Form/NegotiationSessionForm.php
NegotiationUrlForm.php in core/modules/language/src/Form/NegotiationUrlForm.php
PerformanceForm.php in core/modules/system/src/Form/PerformanceForm.php
RegionalForm.php in core/modules/system/src/Form/RegionalForm.php
RssFeedsForm.php in core/modules/system/src/Form/RssFeedsForm.php
SettingsForm.php in core/modules/aggregator/src/Form/SettingsForm.php
SimpletestSettingsForm.php in core/modules/simpletest/src/Form/SimpletestSettingsForm.php
SiteConfigureForm.php in core/lib/Drupal/Core/Installer/Form/SiteConfigureForm.php
SiteInformationForm.php in core/modules/system/src/Form/SiteInformationForm.php
SiteMaintenanceModeForm.php in core/modules/system/src/Form/SiteMaintenanceModeForm.php
StatisticsSettingsForm.php in core/modules/statistics/src/StatisticsSettingsForm.php
SystemConfigFormTestForm.php in core/modules/system/tests/modules/form_test/src/SystemConfigFormTestForm.php
ThemeAdminForm.php in core/modules/system/src/Form/ThemeAdminForm.php
ThemeSettingsForm.php in core/modules/system/src/Form/ThemeSettingsForm.php
UpdateSettingsForm.php in core/modules/update/src/UpdateSettingsForm.php