Kotlin extensions functions provided by own Gradle Plugin

[Tomas_Prochazka (Tomáš Procházka)]

I’m writing Gradle plugin in Kotlin and I’m looking for a way how to extend some existing object. For example Android specific one

fun ProductFlavor.setSignKey(remoteSignKeyName: RemoteSignKeyName) {
    this.extra["signKeyName"] = remoteSignKeyName
}

It is technologically possible because project.extensions.create do exactly the same thing, but just for Project object.

Is it somehow possible to the same with other objects?

I found a promising way here

Using Kotlin extension properties & functions from Kotlin DSL in my plugin's Kotlin code

That’s right, you don’t get generated accessors in .kt files. But you can also use .gradle.kts files in your plugin project, and they do get generated accessors. See Precompiled script plugins in the doc.

but I did not found a way how to make it working with .gradle.kts in my plugin project.
Do you know about some example of this?