 pixels of the view or target the resource will be loaded into
<DT><B>Returns:</B><DD>A <A HREF="../../../../../com/bumptech/glide/load/data/DataFetcher.html" title="interface in com.bumptech.glide.load.data"><CODE>DataFetcher</CODE></A> that can obtain the data the resource can be decoded from if the resource is not
 cached, or null if no valid <A HREF="../../../../../com/bumptech/glide/load/data/DataFetcher.html" title="interface in com.bumptech.glide.load.data"><CODE>DataFetcher</CODE></A> could be const