Hey, why is `streamProvider` only available for `PartData.FileItem` and not for all `PartData` subcl...

# ktor

[hfhbd]

Hey, why is streamProvider only available for PartData.FileItem and not for all PartData subclasses? It is only a shortcut for provider().asStream()
https://github.com/ktorio/ktor/blob/1bd92eaa4974dc0b09757c635895ce0e38474a95/ktor-http/jvm/src/io/ktor/http/content/MultipartJvm.kt

[Aleksei Tirman [JB]]

Please file a feature request to add extension functions for all subclasses. It's available for FileItem only because it's used in a test.

[hfhbd]

https://youtrack.jetbrains.com/issue/KTOR-3066