title: error: package android.support.multidex does not exist whem upgrading from minSdkVersion 16 to minSdkVersion 23
body: <p>My app is not supporting Android 4.x and 5.x anymore, only Android 6.0 and higher. For that reason, in my <code>app/build.gradle</code> I changed <code>minSdkVersion 16</code> to <code>minSdkVersion 23</code>. After doing that, I have started to get this error when I try to run the app:</p>
  
  <pre><code>error: package android.support.multidex does not exist
  error: cannot find symbol variable MultiDex
  </code></pre>
  
  <p>In one of my <code>.java</code> files, I see the errors in the following lines:</p>
  
  <pre><code>import android.support.multidex.MultiDex;
  MultiDex.install(this);
  </code></pre>
  
  <p>Should I simply not use <code>MultiDex</code> because Android 6.0 and higher do not need that anymore? This is considering that my app will not support Android 5.x and lower anymore. Thank you.</p>