protected PsiBuilder createBuilderAndParse() {
    final ParserDefinition xmlParserDefinition = LanguageParserDefinitions.INSTANCE.forLanguage(XMLLanguage.INSTANCE);
    assert xmlParserDefinition != null;

    PsiBuilder b = PsiBuilderFactory.getInstance().createBuilder(xmlParserDefinition, xmlParserDefinition.createLexer(null), myText);
    new XmlParsing(b).parseDocument();
    return b;
  }
protected PsiBuilder createBuilderAndParse()