Technical questions on staking

zortag

I am doing a deep dive into OlympusDAO contracts so that I can understand them from a technical point of view. It isn't clear where is the best place to ask questions on this, so I'll ask here. I haven't had much luck on Discord.

Specifically, where and how in the smart contracts is the rate of return set each epoch? It looks like the StakingDistributor contract has a setAdjustment function that can be called to change the rate, but that is an external function and I don't see it called anywhere.

Can someone explain how exactly the rate of return is set each epoch, in terms of actual contract function calls?

Thanks