title: How bind Android DataBinding to Menu?
body: <p>As it supports Data Binding menu in android?
  I write this code, but error: "Error:(16, 26) No resource type specified (at 'visible' with value '@{item.visible}')."</p>
  
  <pre><code>&lt;menu xmlns:android="http://schemas.android.com/apk/res/android"
        xmlns:app="http://schemas.android.com/apk/res-auto"&gt;
  &lt;data&gt;
     &lt;variable
          name="item"
          type="ru.dixy.ubiworkerchecklistsmobile.Models.Fact"/&gt;
      &lt;import type="android.view.View"/&gt;
  &lt;/data&gt;
      &lt;item
          android:id="@+id/compliteitem"
          android:title="mybutton"
          android:icon="@drawable/complite"
          android:visible="@{item.visible}"
          app:showAsAction="ifRoom"
           /&gt;
  &lt;/menu&gt;
  </code></pre>