public function is_changeable($level = null) {
        if ($this->changeable === false) {
            return false;
        } else {
            return parent::is_changeable($level);
        }
    }
public function is_changeable($level = null) {
        if ($this->changeable === false) {
            return false;
        } else {
            return parent::is_changeable($level);
        }
    }
public function is_changeable ( $ level = null ) { if ( $ this -> changeable === false ) { return false ; } else { return parent :: is_changeable ( $ level ) ; } }
Returns true if the setting is changeable
@param int $level Optional, if provided only depedency_settings below or equal to this level are considered,
when checking if the ui_setting is changeable. Although dependencies might cause a lock on this setting,
they could be changeable in the same view.
@return bool
Returns true if the setting is changeable