bestAsync
fun bestAsync(request: RewardRequest): CompletableFuture<BestReward?>
fun bestAsync(request: RewardRequest, forceRefresh: Boolean): CompletableFuture<BestReward?>
best for Java.
fun bestAsync(request: RewardRequest): CompletableFuture<BestReward?>
fun bestAsync(request: RewardRequest, forceRefresh: Boolean): CompletableFuture<BestReward?>
best for Java.