title: Undefined complexType 'java.lang.Object' is used as a base for complex type extension
body: <p>I have very simple layout in .axml source file in AndroidApp.
  I use this layout to add dynamic TextViews and Buttons. Application works correct.</p>
  
  <p>Even though I get a warning (Line 6, Column 8): Undefined complexType 'java.lang.Object' is used as a base for complex type extension.</p>
  
  <pre><code> &lt;?xml version="1.0" encoding="utf-8"?&gt;
   &lt;LinearLayout xmlns:x="http://schemas.android.com/apk/res/android"
      x:orientation="horizontal"
      x:layout_width="match_parent"
      x:layout_height="match_parent"
      x:id="@+id/mainLayout"/&gt;
  </code></pre>