title: Android Studio can not resolve AutoValue class
body: <p>I started to use <a href="https://github.com/google/auto/blob/master/value/userguide/index.md" rel="noreferrer">AutoValue</a> today in one of my projects and what bothers me is that Android Studio can not resolve the generated class name (<code>AutoValue_DrawableContent</code>) and marks it with the red color:</p>
  <p><a href="https://i.stack.imgur.com/lt1R6.png" rel="noreferrer"><img src="https://i.stack.imgur.com/lt1R6.png" alt="enter image description here" /></a></p>
  <p>How I can suppress this warning?</p>