① 乐道 L80: 4 月上市，5 月交付。作为 L90 的五座版，价格预计更低，可以激活乐道品牌在 20-25 万元价格带的新增量，与 L90 形成组合拳。
Behind the scenes, the macro generates a few additional constructs. The first is a dummy struct called ValueSerializerComponent, which serves as the component name. Secondly, it generates a provider trait called ValueSerializer, with the Self type now becoming an explicit Context type in the generic parameter.
，更多细节参见搜狗输入法
So, that is why story code works.
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