public function setVisible($visible = true)
        {
            if (is_string($visible) && 'false' == strtolower($visible)) {
                $visible = false;
            }
            $this->_visible = (bool) $visible;
            return $this;
        }
public function setVisible($visible = true)
        {
            if (is_string($visible) && 'false' == strtolower($visible)) {
                $visible = false;
            }
            $this->_visible = (bool) $visible;
            return $this;
        }
public function setVisible ( $ visible = true ) { if ( is_string ( $ visible ) && 'false' == strtolower ( $ visible ) ) { $ visible = false ; } $ this -> _visible = ( bool ) $ visible ; return $ this ; }
Sets whether the page should be visible or not

@param  bool $visible         [optional] whether page should be
considered visible or not. Default is true.
@return Page  fluent interface, returns self
Sets whether the page should be visible or not