private void assertSeamConverting(String seamTextExpression)
throws TokenStreamException, RecognitionException {
System.out.println("SeamText -> Html -> SeamText");
System.out.println("------------------- SeamText -------------------");
final SeamTextParser seamParser = new SeamTextParser(new SeamTextLexer(
new StringReader(seamTextExpression)));
seamParser.startRule();
System.out.println("------------------- Html -----------------------");
final String html = seamParser.toString();