48 files declare their use of BubbleableMetadata

Actions.php in core/lib/Drupal/Core/Render/Element/Actions.php
AjaxResponse.php in core/lib/Drupal/Core/Ajax/AjaxResponse.php
AliasPathProcessor.php in core/modules/path_alias/src/PathProcessor/AliasPathProcessor.php
AliasPathProcessorTest.php in core/modules/path_alias/tests/src/Unit/PathProcessor/AliasPathProcessorTest.php
AttachedRenderingBlock.php in core/modules/system/tests/modules/render_attached_test/src/Plugin/Block/AttachedRenderingBlock.php
BubbleableMetadataTest.php in core/tests/Drupal/Tests/Core/Render/BubbleableMetadataTest.php
BubbleableMetadataTest.php in core/modules/aggregator/tests/src/Unit/BubbleableMetadataTest.php
CommentTokenReplaceTest.php in core/modules/comment/tests/src/Functional/CommentTokenReplaceTest.php
EarlyRenderingControllerWrapperSubscriber.php in core/lib/Drupal/Core/EventSubscriber/EarlyRenderingControllerWrapperSubscriber.php
Element.php in core/modules/editor/src/Element.php
EntityField.php in core/modules/views/src/Plugin/views/field/EntityField.php
FilterProcessResult.php in core/modules/filter/src/FilterProcessResult.php
FormElement.php in core/lib/Drupal/Core/Render/Element/FormElement.php
GeneratedLink.php in core/lib/Drupal/Core/GeneratedLink.php
GeneratedUrl.php in core/lib/Drupal/Core/GeneratedUrl.php
Link.php in core/lib/Drupal/Core/Render/Element/Link.php
LinkBase.php in core/modules/views/src/Plugin/views/field/LinkBase.php
MenuLinkContentCacheabilityBubblingTest.php in core/modules/menu_link_content/tests/src/Kernel/MenuLinkContentCacheabilityBubblingTest.php
NodeTokenReplaceTest.php in core/modules/node/tests/src/Kernel/NodeTokenReplaceTest.php
NullGenerator.php in core/lib/Drupal/Core/Routing/NullGenerator.php
NullPathProcessorManager.php in core/lib/Drupal/Core/PathProcessor/NullPathProcessorManager.php
OutboundPathProcessorInterface.php in core/lib/Drupal/Core/PathProcessor/OutboundPathProcessorInterface.php
OutboundRouteProcessorInterface.php in core/lib/Drupal/Core/RouteProcessor/OutboundRouteProcessorInterface.php
PathProcessorManager.php in core/lib/Drupal/Core/PathProcessor/PathProcessorManager.php
PathProcessorTest.php in core/modules/system/tests/modules/url_alter_test/src/PathProcessorTest.php
ProcessedText.php in core/modules/filter/src/Element/ProcessedText.php
RenderElement.php in core/lib/Drupal/Core/Render/Element/RenderElement.php
RouteNoneTest.php in core/tests/Drupal/KernelTests/Core/RouteProcessor/RouteNoneTest.php
RouteProcessorCsrf.php in core/lib/Drupal/Core/Access/RouteProcessorCsrf.php
RouteProcessorCsrfTest.php in core/tests/Drupal/Tests/Core/Access/RouteProcessorCsrfTest.php
RouteProcessorCurrent.php in core/lib/Drupal/Core/RouteProcessor/RouteProcessorCurrent.php
RouteProcessorCurrentIntegrationTest.php in core/tests/Drupal/KernelTests/Core/RouteProcessor/RouteProcessorCurrentIntegrationTest.php
RouteProcessorManager.php in core/lib/Drupal/Core/RouteProcessor/RouteProcessorManager.php
RouteProcessorManagerTest.php in core/tests/Drupal/Tests/Core/RouteProcessor/RouteProcessorManagerTest.php
TestController.php in core/modules/system/tests/modules/token_test/src/Controller/TestController.php
theme.inc in core/includes/theme.inc
The theme system, which controls the output of Drupal.
Token.php in core/lib/Drupal/Core/Utility/Token.php
TokenReplaceKernelTest.php in core/modules/system/tests/src/Kernel/Token/TokenReplaceKernelTest.php
TokenReplaceTest.php in core/modules/taxonomy/tests/src/Functional/TokenReplaceTest.php
TokenReplaceTest.php in core/modules/views/tests/src/Kernel/TokenReplaceTest.php
TokenTest.php in core/tests/Drupal/Tests/Core/Utility/TokenTest.php
TwigExtension.php in core/lib/Drupal/Core/Template/TwigExtension.php
UnroutedUrlAssemblerTest.php in core/tests/Drupal/Tests/Core/Utility/UnroutedUrlAssemblerTest.php
UrlGenerator.php in core/lib/Drupal/Core/Routing/UrlGenerator.php
UrlGeneratorTest.php in core/tests/Drupal/Tests/Core/Routing/UrlGeneratorTest.php
UserTokenReplaceTest.php in core/modules/user/tests/src/Functional/UserTokenReplaceTest.php
ViewAjaxController.php in core/modules/views/src/Controller/ViewAjaxController.php
ViewsFormBase.php in core/modules/views_ui/src/Form/Ajax/ViewsFormBase.php

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