fixme.java

@Override
public UserRefreshResult call() throws InterruptedException {
    try {
        checkCacheForUser();
    } catch (UserNotCachedException e) {
        tryCachingUser();
    } catch (ApiRequestForUserAlreadyStartedException e) {
        logger.warn("There is already a registration in progress, ignoring");
        return UserRefreshResult.IN_PROGRESS;
    }
    ...
}

private void checkCacheForUser() {
    if (isUserCached()) {
        return;
    } else if (isRegistrationAlreadyStarted()) {
        throw new ApiRequestForUserAlreadyStartedException();
    } else {
        throw new UserNotCachedException();
    }
}