How to use an Emitter with a Sprite key?

[WombatTurkey]

For example:

 

http://phaser.io/examples/v2/particles/particle-alpha#gv

 

We need to use game.load.image, but,

 

I was curious if it's possible to pass the sprite cache key instead, so we can use our already loaded sprites. (From sprite atlas's, spritesheets, etc).

[drhayes]

I haven't tried it, but I'm pretty sure you can pass the atlas and frame like this to makeParticles: emitter.makeParticles('atlas', 'frame');