public static function restoreCredit($credit)
{
$activity = Activity::getBlank();
$activity->client_id = $credit->client_id;
$activity->credit_id = $credit->id;
$activity->activity_type_id = ACTIVITY_TYPE_RESTORE_CREDIT;
$activity->message = Utils::encodeActivity(Auth::user(), 'restored ' . Utils::formatMoney($credit->balance, $credit->client->getCurrencyId()) . ' credit');
$activity->balance = $credit->client->balance;
$activity->save();
}