s verify they match content the decoder expects to
 handle (i.e. a GIF decoder should verify that the image contains the GIF header block. </p>

 <p> Decoders that return <code>true</code> from <a href="../../../../../../com/bumptech/glide/load/ResourceDecoder.html#handles-T-com.bumptech.glide.load.Options-"><code>ResourceDecoder.handles(Object, Options)</code></a> may still
 return <code>null</code> from <a href="../../../../../../com/bumptech/glide/load/ResourceDecoder.html#decode-T-int-int-com.bumptech.g