https://kotlinlang.org/docs/reference/scope-functions.html
    let, run, with, apply, also
    https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/let.html

2019
https://www.reddit.com/r/Kotlin/comments/b0tms2/scope_functions_kotlin_programming_language/
2018
https://kotlinexpertise.com/coping-with-kotlins-scope-functions/
https://blog.simon-wirtz.de/coping-with-kotlins-scope-functions/