Symfony API
Namespace

Symfony\Component\HttpKernel\DependencyInjection

AddClassesToCachePass Sets the classes to compile in the cache for the container.
ConfigurableExtension This extension sub-class provides first-class integration with the Config/Definition Component.
ContainerAwareHttpKernel Adds a managed request scope.
Extension Allow adding classes to the class cache.
MergeExtensionConfigurationPass Ensures certain extensions are always loaded.
RegisterListenersPass Compiler pass to register tagged services for an event dispatcher.