EventDispatcher Autowiring

[miqrogroove]

There's not a single mention of how to autowire the kernel's EventDispatcher service in these files:

symfony-docs/components/event_dispatcher.rst

Lines 96 to 99 in b9f8400

	The dispatcher is the central object of the event dispatcher system. In
	general, a single dispatcher is created, which maintains a registry of
	listeners. When an event is dispatched via the dispatcher, it notifies all
	listeners registered with that event::

https://github.com/symfony/symfony-docs/blob/7.3/event_dispatcher.rst

My attempt:

Cannot autowire service: argument "$events" of method "__construct()" references class
"Symfony\Component\EventDispatcher\EventDispatcher" but no such service exists.
Try changing the type-hint to one of its parents:
interface "Symfony\Component\EventDispatcher\EventDispatcherInterface",
interface "Psr\EventDispatcher\EventDispatcherInterface", or
interface "Symfony\Contracts\EventDispatcher\EventDispatcherInterface".

Presumably the first suggestion from the exception message would work, but I have no idea what those three different interfaces are for.

This should be better documented somewhere.