code: public static String call(PageContext pc, Object var, boolean serializeQueryByColumns, String strCharset) throws PageException {
  	Charset cs = StringUtil.isEmpty(strCharset) ? pc.getWebCharset() : CharsetUtil.toCharset(strCharset);
  	return _call(pc, var, serializeQueryByColumns, cs);
      }
docs: FUTURE remove, this methods are only used by compiled code in archives older than 5.2.3