Add memcache class as parameter

[binxiaoff]

Hello,

First of all, thank you for building a very nice cache bundle.

I wouldd like to load my own class extended from Lsw\MemcacheBundle\Cache\AntiDogPileMemcache in stead of this class.

Is there any way to new the definition with a parameter like memcache.cache.class to use my own class ?
$memcache = new Definition('Lsw\MemcacheBundle\Cache\AntiDogPileMemcache');

Thank you