title: What is generateStubs configuration in Kotlin?
body: <p>What is <code>generateStubs</code> for Kotlin? Here is my configuration in <code>build.gradle</code>. </p>
  
  <p>I can not find it in public document here : <a href="http://kotlinlang.org/docs/reference/kapt.html" rel="noreferrer">http://kotlinlang.org/docs/reference/kapt.html</a></p>
  
  <pre><code>kapt {
    generateStubs = true
  }
  </code></pre>
  
  <p>If I'm using <code>Java</code> and <code>Kotlin(1.2)</code> in my project, it is still needed to add?</p>