27 files declare their use of Definition

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
BundleTestBundle.php in drupal/core/modules/system/tests/modules/bundle_test/lib/Drupal/bundle_test/BundleTestBundle.php
Definition of Drupal\bundle_test\BundleTestBundle.
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
container11.php in drupal/core/vendor/symfony/dependency-injection/Symfony/Component/DependencyInjection/Tests/Fixtures/containers/container11.php
container12.php in drupal/core/vendor/symfony/dependency-injection/Symfony/Component/DependencyInjection/Tests/Fixtures/containers/container12.php
ContainerBuilderTest.php in drupal/core/vendor/symfony/dependency-injection/Symfony/Component/DependencyInjection/Tests/ContainerBuilderTest.php
DefinitionTest.php in drupal/core/vendor/symfony/dependency-injection/Symfony/Component/DependencyInjection/Tests/DefinitionTest.php
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
interfaces1.php in drupal/core/vendor/symfony/dependency-injection/Symfony/Component/DependencyInjection/Tests/Fixtures/containers/interfaces1.php
interfaces2.php in drupal/core/vendor/symfony/dependency-injection/Symfony/Component/DependencyInjection/Tests/Fixtures/containers/interfaces2.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
ProjectExtension.php in drupal/core/vendor/symfony/dependency-injection/Symfony/Component/DependencyInjection/Tests/Fixtures/includes/ProjectExtension.php
RemoveUnusedDefinitionsPassTest.php in drupal/core/vendor/symfony/dependency-injection/Symfony/Component/DependencyInjection/Tests/Compiler/RemoveUnusedDefinitionsPassTest.php
ReplaceAliasByActualDefinitionPassTest.php in drupal/core/vendor/symfony/dependency-injection/Symfony/Component/DependencyInjection/Tests/Compiler/ReplaceAliasByActualDefinitionPassTest.php
ResolveDefinitionTemplatesPass.php in drupal/core/vendor/symfony/dependency-injection/Symfony/Component/DependencyInjection/Compiler/ResolveDefinitionTemplatesPass.php
ServiceReferenceGraphNode.php in drupal/core/vendor/symfony/dependency-injection/Symfony/Component/DependencyInjection/Compiler/ServiceReferenceGraphNode.php
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
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