12 files declare their use of CallableResolver

CallableResolverTest.php in core/tests/Drupal/Tests/Core/Utility/CallableResolverTest.php
ControllerResolver.php in core/lib/Drupal/Core/Controller/ControllerResolver.php
ControllerResolverTest.php in core/tests/Drupal/Tests/Core/Controller/ControllerResolverTest.php
CustomAccessCheck.php in core/lib/Drupal/Core/Access/CustomAccessCheck.php
CustomAccessCheckTest.php in core/tests/Drupal/Tests/Core/Access/CustomAccessCheckTest.php
FiberPlaceholderTest.php in core/modules/big_pipe/tests/src/Unit/Render/FiberPlaceholderTest.php
MenuLinkTree.php in core/lib/Drupal/Core/Menu/MenuLinkTree.php
MenuLinkTreeTest.php in core/modules/system/tests/src/Unit/Menu/MenuLinkTreeTest.php
PermissionHandler.php in core/modules/user/src/PermissionHandler.php
Renderer.php in core/lib/Drupal/Core/Render/Renderer.php
RendererTestBase.php in core/tests/Drupal/Tests/Core/Render/RendererTestBase.php
ViewAjaxControllerTest.php in core/modules/views/tests/src/Unit/Controller/ViewAjaxControllerTest.php

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