So we already create `Interface` in Java and convert it to lambda with in Kotlin through SAM conversion. How about `interface` in Kotlin? As the previous part suggest, currently there's no SAM conversion in Kotlin interface.
What will you do if you want to test some Kotlin syntax? Chance you are opening your favorite IDE or text editor (not mentioning `vim` or `emacs` user in here) are very likely.
Although a lot of my friends and colleagues use jsoup, i never had a chance to use it. It's my brain default to not choose Java as the language for parsing HTML.