function getOpenStatistics($count = 100, $offset = 0, $recipient = NULL, $tag = NULL, $clientName = NULL, $clientCompany = NULL, $clientFamily = NULL, $osName = NULL, $osFamily = NULL, $osCompany = NULL, $platform = NULL, $country = NULL, $region = NULL, $city = NULL)
{
$query = array();
$query['count'] = $count;
$query['offset'] = $offset;
$query['recipient'] = $recipient;
$query['tag'] = $tag;
$query['client_name'] = $clientName;
$query['client_company'] = $clientCompany;
$query['client_family'] = $clientFamily;
$query['os_name'] = $osName;
$query['os_family'] = $osFamily;
$query['os_company'] = $osCompany;
$query['platform'] = $platform;
$query['country'] = $country;
$query['region'] = $region;
$query['city'] = $city;
return new DynamicResponseModel($this->processRestRequest('GET', '/messages/outbound/opens', $query));
}