50 files declare their use of Reference

AnalyzeServiceReferencesPass.php in drupal/core/vendor/symfony/dependency-injection/Symfony/Component/DependencyInjection/Compiler/AnalyzeServiceReferencesPass.php
AnalyzeServiceReferencesPassTest.php in drupal/core/vendor/symfony/dependency-injection/Symfony/Component/DependencyInjection/Tests/Compiler/AnalyzeServiceReferencesPassTest.php
BanBundle.php in drupal/core/modules/ban/lib/Drupal/ban/BanBundle.php
Definition of Drupal\ban\BanBundle.
bootstrap.inc in drupal/core/includes/bootstrap.inc
Functions that need to be loaded on every Drupal request.
BundleTestBundle.php in drupal/core/modules/system/tests/modules/bundle_test/lib/Drupal/bundle_test/BundleTestBundle.php
Definition of Drupal\bundle_test\BundleTestBundle.
CheckCircularReferencesPassTest.php in drupal/core/vendor/symfony/dependency-injection/Symfony/Component/DependencyInjection/Tests/Compiler/CheckCircularReferencesPassTest.php
CheckExceptionOnInvalidReferenceBehaviorPass.php in drupal/core/vendor/symfony/dependency-injection/Symfony/Component/DependencyInjection/Compiler/CheckExceptionOnInvalidReferenceBehaviorPass.php
CheckExceptionOnInvalidReferenceBehaviorPassTest.php in drupal/core/vendor/symfony/dependency-injection/Symfony/Component/DependencyInjection/Tests/Compiler/CheckExceptionOnInvalidReferenceBehaviorPassTest.php
CheckReferenceValidityPass.php in drupal/core/vendor/symfony/dependency-injection/Symfony/Component/DependencyInjection/Compiler/CheckReferenceValidityPass.php
CheckReferenceValidityPassTest.php in drupal/core/vendor/symfony/dependency-injection/Symfony/Component/DependencyInjection/Tests/Compiler/CheckReferenceValidityPassTest.php
container10.php in drupal/core/vendor/symfony/dependency-injection/Symfony/Component/DependencyInjection/Tests/Fixtures/containers/container10.php
container9.php in drupal/core/vendor/symfony/dependency-injection/Symfony/Component/DependencyInjection/Tests/Fixtures/containers/container9.php
ContainerBuilderTest.php in drupal/core/vendor/symfony/dependency-injection/Symfony/Component/DependencyInjection/Tests/ContainerBuilderTest.php
CoreBundle.php in drupal/core/lib/Drupal/Core/CoreBundle.php
Definition of Drupal\Core\CoreBundle.
DatabaseStorageExpirableTest.php in drupal/core/modules/system/lib/Drupal/system/Tests/KeyValueStore/DatabaseStorageExpirableTest.php
Contains Drupal\system\Tests\KeyValueStore\DatabaseStorageExpirableTest.
DatabaseStorageTest.php in drupal/core/modules/system/lib/Drupal/system/Tests/KeyValueStore/DatabaseStorageTest.php
Contains Drupal\system\Tests\KeyValueStore\DatabaseStorageTest.
DrupalUnitTestBase.php in drupal/core/modules/simpletest/lib/Drupal/simpletest/DrupalUnitTestBase.php
Contains Drupal\simpletest\DrupalUnitTestBase.
FieldSqlStorageBundle.php in drupal/core/modules/field/modules/field_sql_storage/lib/Drupal/field_sql_storage/FieldSqlStorageBundle.php
Definition of Drupal\field_sql_storage\FieldSqlStorageBundle.
FileBundle.php in drupal/core/modules/file/lib/Drupal/file/FileBundle.php
Definition of Drupal\file\FileBundle.
GraphvizDumper.php in drupal/core/vendor/symfony/dependency-injection/Symfony/Component/DependencyInjection/Dumper/GraphvizDumper.php
InlineServiceDefinitionsPass.php in drupal/core/vendor/symfony/dependency-injection/Symfony/Component/DependencyInjection/Compiler/InlineServiceDefinitionsPass.php
InlineServiceDefinitionsPassTest.php in drupal/core/vendor/symfony/dependency-injection/Symfony/Component/DependencyInjection/Tests/Compiler/InlineServiceDefinitionsPassTest.php
install.core.inc in drupal/core/includes/install.core.inc
API functions for installing Drupal.
IntegrationTest.php in drupal/core/vendor/symfony/dependency-injection/Symfony/Component/DependencyInjection/Tests/Compiler/IntegrationTest.php
PhpDumper.php in drupal/core/vendor/symfony/dependency-injection/Symfony/Component/DependencyInjection/Dumper/PhpDumper.php
PhpDumperTest.php in drupal/core/vendor/symfony/dependency-injection/Symfony/Component/DependencyInjection/Tests/Dumper/PhpDumperTest.php
ReferenceTest.php in drupal/core/vendor/symfony/dependency-injection/Symfony/Component/DependencyInjection/Tests/ReferenceTest.php
RegisterMatchersPass.php in drupal/core/lib/Drupal/Core/DependencyInjection/Compiler/RegisterMatchersPass.php
Contains Drupal\Core\DependencyInjection\Compiler\RegisterMatchersPass.
RegisterNestedMatchersPass.php in drupal/core/lib/Drupal/Core/DependencyInjection/Compiler/RegisterNestedMatchersPass.php
Contains Drupal\Core\DependencyInjection\Compiler\RegisterNestedMatchersPass.
RegisterSerializationClassesPass.php in drupal/core/lib/Drupal/Core/DependencyInjection/Compiler/RegisterSerializationClassesPass.php
Contains Drupal\serialization\RegisterSerializationClassesPass.
RemoveUnusedDefinitionsPassTest.php in drupal/core/vendor/symfony/dependency-injection/Symfony/Component/DependencyInjection/Tests/Compiler/RemoveUnusedDefinitionsPassTest.php
ReplaceAliasByActualDefinitionPass.php in drupal/core/vendor/symfony/dependency-injection/Symfony/Component/DependencyInjection/Compiler/ReplaceAliasByActualDefinitionPass.php
ResolveInvalidReferencesPass.php in drupal/core/vendor/symfony/dependency-injection/Symfony/Component/DependencyInjection/Compiler/ResolveInvalidReferencesPass.php
ResolveInvalidReferencesPassTest.php in drupal/core/vendor/symfony/dependency-injection/Symfony/Component/DependencyInjection/Tests/Compiler/ResolveInvalidReferencesPassTest.php
ResolveReferencesToAliasesPass.php in drupal/core/vendor/symfony/dependency-injection/Symfony/Component/DependencyInjection/Compiler/ResolveReferencesToAliasesPass.php
ResolveReferencesToAliasesPassTest.php in drupal/core/vendor/symfony/dependency-injection/Symfony/Component/DependencyInjection/Tests/Compiler/ResolveReferencesToAliasesPassTest.php
RestBundle.php in drupal/core/modules/rest/lib/Drupal/rest/RestBundle.php
Definition of Drupal\rest\RestBundle.
services1.php in drupal/core/vendor/symfony/dependency-injection/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services1.php
services10.php in drupal/core/vendor/symfony/dependency-injection/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services10.php
services8.php in drupal/core/vendor/symfony/dependency-injection/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services8.php
services9.php in drupal/core/vendor/symfony/dependency-injection/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services9.php
StorageTestBase.php in drupal/core/modules/system/lib/Drupal/system/Tests/KeyValueStore/StorageTestBase.php
Contains Drupal\system\Tests\KeyValueStore\StorageTestBase.
update.php in drupal/core/update.php
Administrative page for handling updates from one Drupal version to another.
UserBundle.php in drupal/core/modules/user/lib/Drupal/user/UserBundle.php
Contains Drupal\user\UserBundle.
XmlDumper.php in drupal/core/vendor/symfony/dependency-injection/Symfony/Component/DependencyInjection/Dumper/XmlDumper.php
XmlFileLoader.php in drupal/core/vendor/symfony/dependency-injection/Symfony/Component/DependencyInjection/Loader/XmlFileLoader.php
XmlFileLoaderTest.php in drupal/core/vendor/symfony/dependency-injection/Symfony/Component/DependencyInjection/Tests/Loader/XmlFileLoaderTest.php
YamlDumper.php in drupal/core/vendor/symfony/dependency-injection/Symfony/Component/DependencyInjection/Dumper/YamlDumper.php
YamlFileLoader.php in drupal/core/vendor/symfony/dependency-injection/Symfony/Component/DependencyInjection/Loader/YamlFileLoader.php
YamlFileLoaderTest.php in drupal/core/vendor/symfony/dependency-injection/Symfony/Component/DependencyInjection/Tests/Loader/YamlFileLoaderTest.php