| Name | Description |
|---|---|
| Container | Container implements a [dependency injection](http://en.wikipedia.org/wiki/Dependency_injection) container. |
| Instance | Instance represents a reference to a named object in a dependency injection (DI) container or a service locator. |
| ServiceLocator | ServiceLocator implements a [service locator](http://en.wikipedia.org/wiki/Service_locator_pattern). |