terface 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 thread and call the callback from there.

 <p> This method will only be called when the corresponding resource i