this.parent.addHiddenSlot(slot, multiple, ConvertUtils.convert(value), converter);
getContainerParent().addHiddenSlot(slot, multiple, ConvertUtils.convert(value), converter);
    protected void addHiddenSlot(String slot, Object value, String converterName) throws JspException {        Class<Converter> converter = null;                if (converterName != null) {            try {                converter = (Class<Converter>) Class.forName(converterName);            } catch (ClassNotFoundException e) {                throw new JspException("the specified converter could not be found: " + converterName);            }        }                boolean multiple = isMultiple();        this.parent.addHiddenSlot(slot, multiple, ConvertUtils.convert(value), converter);    }