IDEA告警详解：Optional.isPresent can be replaced with functional-style expression

类似 if(Optional.isPresent()) 的条件语句，可以被重写成函数式风格。

if (!response.isPresent()) { return Result.success(null); } else { return Result.success(response.get()); } 

response.map(Result::success) .orElseGet(() -> Result.success(null));