ActivityMarkStatistics::initializeDemoData

public function initializeDemoData(array $data, array $params)
{
	$group = isset($params['group'])? mb_strtoupper($params['group']) : '';
	if($group === self::GROUP_BY_MARK)
	{
		$marks = StatisticsMark::getDescriptions();

		$identityField = isset($data['identityField']) && $data['identityField'] !== ''
			? $data['identityField'] : 'MARK_ID';

		$titleField = isset($data['titleField']) && $data['titleField'] !== ''
			? $data['titleField'] : 'MARK';

		foreach($data['items'] as $k => $item)
		{
			$markId = isset($item[$identityField]) ? $item[$identityField] : '';
			if($markId !== '' && isset($marks[$markId]))
			{
				$data['items'][$k][$titleField] = $marks[$markId];
			}
		}
	}
	return $data;
}