[Feature Request] Support for mapstruct-spi-protobuf

まだ誰も着手していません。

Protobuf is widely used in the industry and often we need to convert proto generated classes to/from POJOs (or models generated by Lombok/AutoValue/Immutables/YouNameIt).

While it would be awesome for MapStruct to provide out of the box integration with Protobuf like Lombok. Before that it seems that the next best choice is to use this SPI https://github.com/entur/mapstruct-spi-protobuf.

This SPI solves the compile time problem where MapStruct thinks there are unmapped target properties.

However the Idea plugin is not recognizing the SPI and still shows a warning. It would be super nice the plugin would match the complier's behaviour in that.

まず、IntelliJ plugin がマッピングされていないターゲットプロパティをどのように検出するかを調べ、mapstruct-spi-protobuf 統合を使用した場合のコンパイラーの動作と比較します。SPI によってマッピングが有効になる場合に、protobuf 生成クラスについて plugin が警告を報告しなくなれば完了です。

索引モデルが issue の本文から書いたものです。