/**
  * Cancels provided subscription. Returns canceled subscription information on success.
  * For more information see: https://www.egopay.com/developers/api
  * Since v1.3
  * @param array $aParams
  * @return mixed
  */
 public function getCancelSubscription($aParams = array())
 {
     $this->_setupCredentials($aParams);
     $oCancelSubscription = $this->_oClient->cancelSubscription($aParams);
     $this->_checkError($oCancelSubscription);
     return $oCancelSubscription;
 }