escapeRule = ParserRuleFactory.createEscapeRule(esc, TokenMarker.AC_NULL);
escapeRule = ParserRuleFactory.createEscapeRule(esc);
	public void setEscape(String esc)	{		if (esc == null)		{			escapeRule = null;		}		else		{			escapeRule = ParserRuleFactory.createEscapeRule(esc,				TokenMarker.AC_NULL);		}		escapePattern = null;	}