onLeave
Platform and version requirements: JVM (1.0)
fun onLeave(function: (File) -> Unit): FileTreeWalk
Sets a callback function, that is called on any left directory after its files are visited and after it is visited itself.
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Licensed under the Apache License, Version 2.0.
https://kotlinlang.org/api/latest/jvm/stdlib/kotlin.io/-file-tree-walk/on-leave.html
