A modern programming language that makes developers happier.

kotlinlang

In roman’s talk at Kotlin conf it is recommended to define function which are a coroutine as an extension on `CouroutineScope` what if the coroutine is a method inside class?  How is this going to behave?
```
class Watcher {
    fun CoroutineScope.watcherStarted() = async {

    }
}
```

That method can only be invoked within the context of a `Watcher`. So one way you can do this: ```
...launch {
    val watcher = Watcher()
    watcher.run {
        watcherStarted() // invokes the CoroutineScope extension from launch
    }
}```