="../../../../../com/bumptech/glide/load/data/DataFetcher.html" title="interface in com.bumptech.glide.load.data"><code>DataFetcher</code></a> as well as an
 optional list of alternate keys from which equivalent data can be loaded. The
 <a href="../../../../../com/bumptech/glide/load/data/DataFetcher.html" title="interface in com.bumptech.glide.load.data"><code>DataFetcher</code></a> will not be used if the resource is already cached.

 <p> Note - If no valid data fetcher can be returned (for example if a m