namespace Zend\ServiceManager;
-interface InitializerInterface
+/**
+ * Backwards-compatibility shim for InitializerInterface.
+ *
+ * Implementations should update to implement only Zend\ServiceManager\Initializer\InitializerInterface.
+ *
+ * If upgrading from v2, take the following steps:
+ *
+ * - rename the method `initialize()` to `__invoke()`, and:
+ * - rename the `$serviceLocator` argument to `$container`, and change the
+ * typehint to `Interop\Container\ContainerInterface`
+ * - swap the order of the arguments (so that `$instance` comes second)
+ * - create an `initialize()` method as defined in this interface, and have it
+ * proxy to `__invoke()`, passing the arguments in the new order.
+ *
+ * Once you have tested your code, you can then update your class to only implement
+ * Zend\ServiceManager\Initializer\InitializerInterface, and remove the `initialize()`
+ * method.
+ *
+ * @deprecated Use Zend\ServiceManager\Initializer\InitializerInterface instead.
+ */
+interface InitializerInterface extends Initializer\InitializerInterface
{
/**
* Initialize