addListener(string $eventName, callable $listener, int $priority) Adds an event listener that listens
offsetUnset(string $key) ArrayAccess for unset argument.
array getListeners(string $eventName = null) Gets the listeners of a specific event or all listeners
mixed offsetGet(string $key) ArrayAccess for argument getter.
interface EventDispatcherInterface The EventDispatcherInterface is the central point of Symfony's
Event dispatch(string $eventName,
bool isPropagationStopped() Returns whether further event listeners should be triggered.
bool hasListeners(string $eventName = null) Checks whether an event has any registered listeners
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