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Title	Object type	File name	Summary
JsWebAssertTestForm::addWaitForElementVisible	function	core/modules/system/tests/modules/js_webassert_test/src/Form/JsWebAssertTestForm.php	Ajax callback for the "Test waitForElementVisible" button.
LanguageAddForm	class	core/modules/language/src/Form/LanguageAddForm.php	Controller for language addition forms.
LanguageAddForm.php	file	core/modules/language/src/Form/LanguageAddForm.php
LanguageAddForm::actions	function	core/modules/language/src/Form/LanguageAddForm.php	Returns an array of supported actions for the current entity form.
LanguageAddForm::copyFormValuesToEntity	function	core/modules/language/src/Form/LanguageAddForm.php	Copies top-level form values to entity properties
LanguageAddForm::form	function	core/modules/language/src/Form/LanguageAddForm.php	Gets the actual form array to be built.
LanguageAddForm::getFormId	function	core/modules/language/src/Form/LanguageAddForm.php	Returns a unique string identifying the form.
LanguageAddForm::save	function	core/modules/language/src/Form/LanguageAddForm.php	Form submission handler for the 'save' action.
LanguageAddForm::validateCustom	function	core/modules/language/src/Form/LanguageAddForm.php	Validates the language addition form on custom language button.
LanguageAddForm::validatePredefined	function	core/modules/language/src/Form/LanguageAddForm.php	Element specific validator for the Add language button.
LanguageConfigFactoryOverride::addCollections	function	core/modules/language/src/Config/LanguageConfigFactoryOverride.php	Reacts to the ConfigEvents::COLLECTION_INFO event.
LanguageTourTest::testLanguageAddTour	function	core/modules/language/tests/src/Functional/LanguageTourTest.php	Go to add language page and check the tour tooltips.
LayoutBuilder::buildAddSectionLink	function	core/modules/layout_builder/src/Element/LayoutBuilder.php	Builds a link to add a new section at a given delta.
LayoutBuilderDisableInteractionsTest::addBlock	function	core/modules/layout_builder/tests/src/FunctionalJavascript/LayoutBuilderDisableInteractionsTest.php	Adds a block in the Layout Builder.
LayoutBuilderEntityViewDisplay::addSectionField	function	core/modules/layout_builder/src/Entity/LayoutBuilderEntityViewDisplay.php	Adds a layout section field to a given bundle.
LayoutBuilderHighlightTrait::blockAddHighlightId	function	core/modules/layout_builder/src/LayoutBuilderHighlightTrait.php	Provides the ID used to highlight the active Layout Builder UI element.
LayoutBuilderHighlightTrait::sectionAddHighlightId	function	core/modules/layout_builder/src/LayoutBuilderHighlightTrait.php	Provides the ID used to highlight the active Layout Builder UI element.
LayoutBuilderNestedFormUiTest::addFormBlock	function	core/modules/layout_builder/tests/src/FunctionalJavascript/LayoutBuilderNestedFormUiTest.php	Adds a form block specified by label layout and checks it can be saved.
LayoutBuilderNestedFormUiTest::testAddingFormBlocksToDefaults	function	core/modules/layout_builder/tests/src/FunctionalJavascript/LayoutBuilderNestedFormUiTest.php	Test blocks containing forms can be successfully saved editing defaults.
LayoutBuilderNestedFormUiTest::testAddingFormBlocksToOverrides	function	core/modules/layout_builder/tests/src/FunctionalJavascript/LayoutBuilderNestedFormUiTest.php	Test blocks containing forms can be successfully saved editing overrides.
LayoutBuilderTest::openAddBlockForm	function	core/modules/layout_builder/tests/src/FunctionalJavascript/LayoutBuilderTest.php	Opens the add block form in the off-canvas dialog.
LayoutBuilderTranslationTest::addEntityTranslation	function	core/modules/layout_builder/tests/src/Functional/LayoutBuilderTranslationTest.php	Adds an entity translation.
LayoutBuilderTranslationTest::addLayoutOverride	function	core/modules/layout_builder/tests/src/Functional/LayoutBuilderTranslationTest.php	Adds a layout override.
LayoutBuilderUiTest::testAddHighlights	function	core/modules/layout_builder/tests/src/FunctionalJavascript/LayoutBuilderUiTest.php	Tests that elements that open the dialog are properly highlighted.
LayoutDefinition::$additional	property	core/lib/Drupal/Core/Layout/LayoutDefinition.php	Any additional properties and values.
layout_builder_post_update_add_extra_fields	function	core/modules/layout_builder/layout_builder.post_update.php	Ensure all extra fields are properly stored on entity view displays.
LazyPluginCollection::addInstanceId	function	core/lib/Drupal/Component/Plugin/LazyPluginCollection.php	Adds an instance ID to the available instance IDs.
LegacyMessenger::addError	function	core/lib/Drupal/Core/Messenger/LegacyMessenger.php	Adds a new error message to the queue.
LegacyMessenger::addMessage	function	core/lib/Drupal/Core/Messenger/LegacyMessenger.php	Adds a new message to the queue.
LegacyMessenger::addStatus	function	core/lib/Drupal/Core/Messenger/LegacyMessenger.php	Adds a new status message to the queue.
LegacyMessenger::addWarning	function	core/lib/Drupal/Core/Messenger/LegacyMessenger.php	Adds a new warning message to the queue.
LinkBase::addLangcode	function	core/modules/views/src/Plugin/views/field/LinkBase.php	Adds language information to the options.
LocaleUpdateBase::addLanguage	function	core/modules/locale/tests/src/Functional/LocaleUpdateBase.php	Adds a language.
locale_form_language_admin_add_form_alter	function	core/modules/locale/locale.module	Implements hook_form_FORM_ID_alter() for language_admin_add_form().
locale_form_language_admin_add_form_alter_submit	function	core/modules/locale/locale.module	Form submission handler for language_admin_add_form().
LocalStream::dir_readdir	function	core/lib/Drupal/Core/StreamWrapper/LocalStream.php	Support for readdir().
LoggerChannel::addLogger	function	core/lib/Drupal/Core/Logger/LoggerChannel.php	Adds a logger.
LoggerChannelFactory::addLogger	function	core/lib/Drupal/Core/Logger/LoggerChannelFactory.php	Adds a logger to all the channels.
LoggerChannelFactoryInterface::addLogger	function	core/lib/Drupal/Core/Logger/LoggerChannelFactoryInterface.php	Adds a logger to all the channels.
LoggerChannelInterface::addLogger	function	core/lib/Drupal/Core/Logger/LoggerChannelInterface.php	Adds a logger.
ManageDisplayTest::fieldUIAddNewField	function	core/modules/field_ui/tests/src/FunctionalJavascript/ManageDisplayTest.php	Creates a new field through the Field UI.
ManageFieldsFunctionalTest::addExistingField	function	core/modules/field_ui/tests/src/Functional/ManageFieldsFunctionalTest.php	Tests adding an existing field in another content type.
ManageFieldsFunctionalTest::addPersistentFieldStorage	function	core/modules/field_ui/tests/src/Functional/ManageFieldsFunctionalTest.php	Tests that persistent field storage appears in the field UI.
ManageGitIgnore::addToGitIgnore	function	composer/Plugin/Scaffold/ManageGitIgnore.php	Adds a set of entries to the specified .gitignore file.
ManyToOneHelper::addFilter	function	core/modules/views/src/ManyToOneHelper.php
ManyToOneHelper::addTable	function	core/modules/views/src/ManyToOneHelper.php	Add a table to the query.
MatcherDumper::addRoutes	function	core/lib/Drupal/Core/ProxyClass/Routing/MatcherDumper.php	Adds additional routes to be dumped.
MatcherDumper::addRoutes	function	core/lib/Drupal/Core/Routing/MatcherDumper.php	Adds additional routes to be dumped.
MatcherDumperInterface::addRoutes	function	core/lib/Drupal/Core/Routing/MatcherDumperInterface.php	Adds additional routes to be dumped.
MatcherDumperTest::testAddAdditionalRoutes	function	core/tests/Drupal/KernelTests/Core/Routing/MatcherDumperTest.php	Confirms that we can add routes to the dumper when it already has some.

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