27 files declare their use of CallableResolver

batch.inc in core/includes/batch.inc
Batch processing API for processes to run in multiple HTTP requests.
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
EntityForm.php in core/lib/Drupal/Core/Entity/EntityForm.php
FiberPlaceholderTest.php in core/modules/big_pipe/tests/src/Unit/Render/FiberPlaceholderTest.php
form.inc in core/includes/form.inc
Functions for form and batch generation and processing.
FormAjaxResponseBuilder.php in core/lib/Drupal/Core/Form/FormAjaxResponseBuilder.php
FormAjaxResponseBuilderTest.php in core/tests/Drupal/Tests/Core/Form/FormAjaxResponseBuilderTest.php
FormBuilder.php in core/lib/Drupal/Core/Form/FormBuilder.php
FormSubmitter.php in core/lib/Drupal/Core/Form/FormSubmitter.php
FormSubmitterTest.php in core/tests/Drupal/Tests/Core/Form/FormSubmitterTest.php
FormTestBase.php in core/tests/Drupal/Tests/Core/Form/FormTestBase.php
FormValidator.php in core/lib/Drupal/Core/Form/FormValidator.php
FormValidatorTest.php in core/tests/Drupal/Tests/Core/Form/FormValidatorTest.php
MenuLinkTree.php in core/lib/Drupal/Core/Menu/MenuLinkTree.php
MenuLinkTreeTest.php in core/modules/system/tests/src/Unit/Menu/MenuLinkTreeTest.php
ModuleHandler.php in core/lib/Drupal/Core/Extension/ModuleHandler.php
ModuleHandlerTest.php in core/tests/Drupal/Tests/Core/Extension/ModuleHandlerTest.php
NavigationMenuLinkTree.php in core/modules/navigation/src/Menu/NavigationMenuLinkTree.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
ThemeManager.php in core/lib/Drupal/Core/Theme/ThemeManager.php
ViewAjaxControllerTest.php in core/modules/views/tests/src/Unit/Controller/ViewAjaxControllerTest.php

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