private function givenIHaveRegisteredAListener_For($listener, $event)
{
$this->caught->set($listener, new Liste());
$caught = $this->caught;
$this->dispatcher->addListener($event, function ($event) use($caught, $listener) {
/** @var $caught Map */
/** @var $list Liste */
$list = $caught->get($listener);
$list->append($event);
});
}
/**
* @see \watoki\stepper\events\MigrationEvent
* @param string $event Name of event class (must implement MigrationEvent)
* @param callable $listener
*/
public function on($event, $listener)
{
$this->dispatcher->addListener($event, $listener);
}