removeCrontabEntries example

$plugin->setInstalled(null);
        $plugin->setActive(false);

        $this->events->notify(PluginEvent::POST_UNINSTALL, new PostPluginUninstallEvent($context, $bootstrap));
        $this->events->notify(PluginEvent::POST_DEACTIVATE, new PostPluginDeactivateEvent($context, $bootstrap));

        $this->em->flush($plugin);

        $pluginId = $plugin->getId();

        $this->removeEventSubscribers($pluginId);
        $this->removeCrontabEntries($pluginId);
        $this->removeMenuEntries($pluginId);
        $this->removeTemplates($pluginId);
        $this->removeEmotionComponents($pluginId);

        $this->removeSnippets($bootstrap, $removeData);

        if ($removeData) {
            $this->removeFormsAndElements($pluginId);
        }

        return $context;
    }