CBPDocumentService::getDocumentForHistory

public function getDocumentForHistory($parameterDocumentId, $historyIndex)
{
	[$moduleId, $entity, $documentId] = CBPHelper::ParseDocumentId($parameterDocumentId);

	if ($moduleId)
	{
		CModule::IncludeModule($moduleId);
	}

	if (class_exists($entity))
		return call_user_func_array(array($entity, "GetDocumentForHistory"), array($documentId, $historyIndex));

	return null;
}