/**
  * Returns the attached API's user sold subscriptions
  * For more information see: https://www.egopay.com/developers/api
  * Since v1.3
  * @param array $aParams
  * @return mixed
  */
 public function getSoldSubscriptions($aParams = array())
 {
     $this->_setupCredentials($aParams);
     $oSoldSubscriptions = $this->_oClient->soldSubscriptions($aParams);
     $this->_checkError($oSoldSubscriptions);
     return $oSoldSubscriptions;
 }