title: Thread.sleep() in a native Kotlin project
body: <p>I'm trying to create a simple native Kotlin project. I want my project to wait for X millisec during a process:</p>
  
  <pre><code>import kotlin.concurrent
  
  fun main() {
      Thread.sleep(500);
      println("Hello world")
  }
  </code></pre>
  
  <p>Command to compile:</p>
  
  <pre><code>kotlinc main.kt -o program.exe
  </code></pre>
  
  <p>But I get the following error:</p>
  
  <pre><code>main.kt:1:15: error: unresolved reference: concurrent
  import kotlin.concurrent
                ^
  main.kt:4:2: error: unresolved reference: Thread
          Thread.sleep(500);
          ^
  </code></pre>
  
  <p>I'm a bit confused, isn't this the proper way to delay my application?</p>