src/WatcherPlugin.php
public function supportsEvent($eventId)
    {
        $supportedEvents = [WatcherInterface::CREATE_EVENT, WatcherInterface::MODIFY_EVENT, WatcherInterface::DELETE_EVENT, WatcherInterface::ALL_EVENT];
        return array_search($eventId, $supportedEvents, true) !== false;
    }
public function supportsEvent($eventId)
    {
        $supportedEvents = [WatcherInterface::CREATE_EVENT, WatcherInterface::MODIFY_EVENT, WatcherInterface::DELETE_EVENT, WatcherInterface::ALL_EVENT];
        return array_search($eventId, $supportedEvents, true) !== false;
    }
See if the supplied event identifier is supported by Watcher

@param $eventId