ser.startDocument("1.0", "UTF-8");
SMapImpl attrs = new SMapImpl();
attrs.put(null, "version", "1.0");
ser.startElement(ocfns, "container", attrs, true);
ser.newLine();
ser.startElement(ocfns, "rootfiles", null, false);
ser.newLine();
attrs = new SMapImpl();
attrs.put(null, "full-path", opf.name);
attrs.put(null, "media-type", opf.mediaType);
ser.startElement(ocfns, "rootfile", attrs, true);