Interface for self-registering event listeners.
Classes implementing this interface may be registered by name or instance with an EventManager, without an event name. The attach() method will then be called with the current EventManager instance, allowing the class to wire up one or more listeners.
attach(\Zend\EventManager\EventManagerInterface $events) : void
Implementors may add an optional $priority argument; the EventManager implementation will pass this to the aggregate.
detach(\Zend\EventManager\EventManagerInterface $events) : void