9 string references to YAML keys in menu_ui.routing.yml

MenuDeleteForm::submitForm in core/modules/menu_ui/src/Form/MenuDeleteForm.php
MenuLinkBase::getEditRoute in core/lib/Drupal/Core/Menu/MenuLinkBase.php
MenuLinkContentDeleteForm::getCancelUrl in core/modules/menu_link_content/src/Form/MenuLinkContentDeleteForm.php
MenuLinkDefault::getResetRoute in core/lib/Drupal/Core/Menu/MenuLinkDefault.php
MenuLinkEditForm::submitForm in core/modules/menu_ui/src/Form/MenuLinkEditForm.php
MenuLinkResetForm::getCancelUrl in core/modules/menu_ui/src/Form/MenuLinkResetForm.php
MenuUiHooks::help in core/modules/menu_ui/src/Hook/MenuUiHooks.php
Implements hook_help().
MenuUiHooks::systemBreadcrumbAlter in core/modules/menu_ui/src/Hook/MenuUiHooks.php
Implements hook_system_breadcrumb_alter().
MenuUiTest::doMenuTests in core/modules/menu_ui/tests/src/Functional/MenuUiTest.php
Tests menu functionality.

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