/**
  * {@inheritDoc}
  * @see \Omnipay\Common\Message\AbstractRequest::send()
  * @throws \Omnipay\Common\Exception\InvalidRequestException - when the credit card information is missing
  * @throws \Omnipay\Common\Exception\InvalidCreditCardException - when the credit card information is invalid
  * @throws \Omnipay\Common\Exception\InvalidResponseException - when the API call fails or returns bad data
  * @throws \Omnipay\Econtext\Exception\InvalidCredentialsException - if invalid gateway credentials were used (fragile)
  * @return \Omnipay\Econtext\Message\CreateCardMerchantResponse
  */
 public function send()
 {
     return parent::send();
 }