Annotate interface function that must call super
<p>I'm creating interface and some function in it has a body.
It's required, that class that implements this interface must call super in overriding function before executing other code.
How can I do this?</p>

<pre><code>interface Watcher {
    fun funWithoutBody()

    fun startWatching() {
        //do some important stuff which must be called
    }
}
</code></pre>