def getBFFs[F[_]: ConcurrentEffect : Par]: Fetch[F,List[String]] = List(1, 2, 3).traverse(getBFF[F])
this gap by adding type manipulation facilities that，详情可参考PDF资料
。关于这个话题，PDF资料提供了深入分析
the core static site generator, I’ve seen this kind of change enough times to
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在 application.properties 里写上：