clear() {@inheritdoc}

class FilesystemAdapter extends

saveDeferred(CacheItemInterface $item) {@inheritdoc}

getItems(array $keys = array()) {@inheritdoc}

save(CacheItemInterface $item) {@inheritdoc}

commit() {@inheritdoc}

hasItem($key) {@inheritdoc} Parameters

expiresAfter($time) {@inheritdoc} Parameters

expiresAt($expiration) {@inheritdoc} Parameters

deleteItems(array $keys) {@inheritdoc} Parameters