"http://d.android.com/reference/java/util/concurrent/ExecutorService.html?is-external=true" title="class or interface in java.util.concurrent"><code>ExecutorService</code></a>
 that may have more than one background thread. </p>

 You <b>MUST</b> use the <a href="../../../../../com/bumptech/glide/load/data/DataFetcher.DataCallback.html" title="interface in com.bumptech.glide.load.data"><code>DataFetcher.DataCallback</code></a> once the request is complete.

 You are free to move the fetch work to another th