pub type RewardPools<T: Config> = CountedStorageMap<_GeneratedPrefixForStorageRewardPools<T>, Twox64Concat, PoolId, RewardPool<T>>;
Reward pools. This is where there rewards for each pool accumulate. When a members payout is claimed, the balance comes out fo the reward pool. Keyed by the bonded pools account.
Storage type is
CountedStorageMap with key type PoolId and value type RewardPool < T >.