src/ExtDirect/Cache/ExtCache.php
public function cacheActions(DirectCollection $collection)
    {
        $serializedCollection = serialize($collection);

        $this->set(Keys::EXT_ACTION, $serializedCollection);
    }
public function cacheActions(DirectCollection $collection)
    {
        $serializedCollection = serialize($collection);

        $this->set(Keys::EXT_ACTION, $serializedCollection);
    }
persists list of actions in cache

@param DirectCollection $collection the actions which should be cached

@return void