23 files declare their use of Menu

block.module in core/modules/block/block.module
Controls the visual building blocks a page is constructed with.
BlockXssTest.php in core/modules/block/tests/src/Functional/BlockXssTest.php
MenuAccessControlHandlerTest.php in core/modules/system/tests/src/Kernel/MenuAccessControlHandlerTest.php
MenuBlockTest.php in core/modules/menu_ui/tests/src/Kernel/MenuBlockTest.php
MenuCacheTagsTest.php in core/modules/menu_ui/tests/src/Functional/MenuCacheTagsTest.php
MenuLinkContentDeleteFormTest.php in core/modules/menu_link_content/tests/src/Functional/MenuLinkContentDeleteFormTest.php
MenuLinksTest.php in core/modules/menu_link_content/tests/src/Kernel/MenuLinksTest.php
MenuResourceTestBase.php in core/modules/system/tests/src/Functional/Rest/MenuResourceTestBase.php
MenuStorageTest.php in core/modules/system/tests/src/Kernel/Menu/MenuStorageTest.php
MenuTest.php in core/modules/jsonapi/tests/src/Functional/MenuTest.php
MenuUiJavascriptTest.php in core/modules/menu_ui/tests/src/FunctionalJavascript/MenuUiJavascriptTest.php
MenuUiNodeTest.php in core/modules/menu_ui/tests/src/Functional/MenuUiNodeTest.php
MenuUiNodeTypeTest.php in core/modules/menu_ui/tests/src/Kernel/MenuUiNodeTypeTest.php
MenuUiTest.php in core/modules/menu_ui/tests/src/Functional/MenuUiTest.php
MenuUninstallTest.php in core/modules/menu_ui/tests/src/Functional/MenuUninstallTest.php
MenuValidationTest.php in core/modules/system/tests/src/Kernel/Entity/MenuValidationTest.php
menu_ui.module in core/modules/menu_ui/menu_ui.module
Allows administrators to customize the site's navigation menus.
MigrateMenuTest.php in core/modules/system/tests/src/Kernel/Migrate/d6/MigrateMenuTest.php
MigrateMenuTest.php in core/modules/system/tests/src/Kernel/Migrate/d7/MigrateMenuTest.php
NavigationMenuBlockTest.php in core/modules/navigation/tests/src/Kernel/NavigationMenuBlockTest.php
NavigationMenuMarkupTest.php in core/modules/navigation/tests/src/Kernel/NavigationMenuMarkupTest.php
SystemMenuBlockTest.php in core/modules/system/tests/src/Kernel/Block/SystemMenuBlockTest.php
SystemMenuNavigationBlockTest.php in core/modules/navigation/tests/src/Kernel/SystemMenuNavigationBlockTest.php

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