String mapcss = preprocessor.pp_root(this);
// do the actual mapcss parsing
InputStream in2 = new ByteArrayInputStream(mapcss.getBytes(StandardCharsets.UTF_8));
MapCSSParser parser = new MapCSSParser(in2, "UTF-8", MapCSSParser.LexicalState.DEFAULT);
parser.sheet(this);
loadMeta();
loadCanvas();
} finally {
closeSourceInputStream(in);