🦝 Java CompletableFuture Fu(CF-Fu, pronounced "Shifu"), a tiny sidekick library to make CompletableFuture usage more convenient, more efficient and safer in your application. 😋🚀🦺
How about keep the Cffu a clean room, and not extends the Future and CompletionStage directly, but provides methods like fromCompletionStage and toCompletionStage.
then we can have method like failed instead of failedStage.