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kotlinlang

There is also some docs about kapt
<https://kotlinlang.org/docs/reference/using-gradle.html#annotation-processing>
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<@U0BNGCVCK> `kotlin-stdlib-jre7` and `kotlin-stdlib-jre8` are extensions on top of `kotlin-stdlib` and contain some useful functions specific for jre7 / jre8 apis, for example:
<https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/use.html>
<https://kotlinlang.org/api/latest/jvm/stdlib/kotlin.streams/index.html> 
They bring kotlin-stdlib to your project as a transitive dependency.