private static function getFooterIconFor($viewDataTableId)
    {
        $tables = static::getAvailableViewDataTables();

        if (!array_key_exists($viewDataTableId, $tables)) {
            return;
        }

        $klass = $tables[$viewDataTableId];

        return array(
            'id'    => $klass::getViewDataTableId(),
            'title' => Piwik::translate($klass::FOOTER_ICON_TITLE),
            'icon'  => $klass::FOOTER_ICON,
        );
    }