public function addHiddenParameter($name, $value = null)
    {
        if (null === $value) {
            unset($this->_hiddenParameters[$name]);
        } else {
            $this->_hiddenParameters[$name] = $value;
        }

        return $this;
    }
public function addHiddenParameter($name, $value = null)
    {
        if (null === $value) {
            unset($this->_hiddenParameters[$name]);
        } else {
            $this->_hiddenParameters[$name] = $value;
        }

        return $this;
    }
public function addHiddenParameter ( $ name , $ value = null ) { if ( null === $ value ) { unset ( $ this -> _hiddenParameters [ $ name ] ) ; } else { $ this -> _hiddenParameters [ $ name ] = $ value ; } return $ this ; }
Add parameter values that should not show in the url but that
must be added to the request when this menu item is current.

@see applyHiddenParameters

@param string $name Name of parameter
@param mixed $value
@return \Gems_Menu_SubMenuItem (continuation pattern
Add parameter values that should not show in the url but that must be added to the request when this menu item is current .