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Hey, ive got a rx api design question. I want to have a `AccountHelper` which exposes observable of `AccountState` which is just a data class of `AccountState(hasAccountCreated, hasAccountInitialized)`. I also have `AccountManager` and which creates account, I could expose that somehow as observable, and account initializer for the other field. My question is, if I were to `combineLatest` the `accountManager.accountObservable` and `accountInitializer.isInitializedObservable` ... should I also then proxy the "mutator" methods to the account manager / initializer? I.e. should I hide it all behind `AccountHelper` fasade (composition)? (ie. `AccountHelper.createAccount()` just proxies to `AccountManager.createAccount()`) ....or should I let api consumers deal with specific object (account manager / initializer)