21 files declare their use of FileCacheFactory

AnnotatedClassDiscovery.php in core/lib/Drupal/Component/Annotation/Plugin/Discovery/AnnotatedClassDiscovery.php
AnnotatedClassDiscoveryCachedTest.php in core/tests/Drupal/Tests/Component/Annotation/AnnotatedClassDiscoveryCachedTest.php
AnnotatedClassDiscoveryTest.php in core/tests/Drupal/Tests/Component/Annotation/AnnotatedClassDiscoveryTest.php
AnnotatedClassDiscoveryTest.php in core/tests/Drupal/Tests/Component/Plugin/Discovery/AnnotatedClassDiscoveryTest.php
DrupalKernel.php in core/lib/Drupal/Core/DrupalKernel.php
ExtensionDiscovery.php in core/lib/Drupal/Core/Extension/ExtensionDiscovery.php
ExtensionDiscoveryTest.php in core/tests/Drupal/Tests/Core/Extension/ExtensionDiscoveryTest.php
FileCacheFactoryTest.php in core/tests/Drupal/Tests/Component/FileCache/FileCacheFactoryTest.php
FileStorage.php in core/lib/Drupal/Core/Config/FileStorage.php
FunctionalTestSetupTrait.php in core/lib/Drupal/Core/Test/FunctionalTestSetupTrait.php
HelpTopicDiscovery.php in core/modules/help_topics/src/HelpTopicDiscovery.php
KernelTestBase.php in core/tests/Drupal/KernelTests/KernelTestBase.php
KernelTestBaseTest.php in core/tests/Drupal/KernelTests/KernelTestBaseTest.php
UnitTestCase.php in core/tests/Drupal/Tests/UnitTestCase.php
YamlDirectoryDiscovery.php in core/lib/Drupal/Component/Discovery/YamlDirectoryDiscovery.php
YamlDirectoryDiscoveryTest.php in core/tests/Drupal/Tests/Component/Discovery/YamlDirectoryDiscoveryTest.php
YamlDiscovery.php in core/lib/Drupal/Component/Discovery/YamlDiscovery.php
YamlDiscoveryTest.php in core/tests/Drupal/Tests/Component/Discovery/YamlDiscoveryTest.php
YamlDiscoveryTest.php in core/tests/Drupal/Tests/Core/Discovery/YamlDiscoveryTest.php
YamlFileLoader.php in core/lib/Drupal/Core/DependencyInjection/YamlFileLoader.php
YamlFileLoaderTest.php in core/tests/Drupal/Tests/Core/DependencyInjection/YamlFileLoaderTest.php

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