/**
* Tags traits about the group.
*
* @param array $message
*
* @return boolean whether the group call succeeded
*/
public static function group(array $message)
{
self::checkClient();
$groupId = !empty($message["groupId"]);
$userId = !empty($message["userId"]);
self::assert($groupId && $userId, "Segment::group() expects userId and groupId");
return self::$client->group($message);
}
