code: public static Observable<List<File>> createFilesFromClipData(final Context context,
        final ClipData clipData) {
  
      return createFilesFromClipData(context, clipData, MimeMap.UrlConnection);
    }
docs: /*
  Create a copy of the files found under the ClipData item passed from MultiSelection, in the Library's cache folder.
  
  The mime type of the resource will be determined by URLConnection.guessContentTypeFromName() method.