/**
  * Set credit card holder.
  * 
  * @param \Moip\Resource\Customer $holder
  */
 private function setCreditCardHolder(Customer $holder)
 {
     $this->data->fundingInstrument->creditCard->holder = new stdClass();
     $this->data->fundingInstrument->creditCard->holder->fullname = $holder->getFullname();
     $this->data->fundingInstrument->creditCard->holder->birthdate = $holder->getBirthDate();
     $this->data->fundingInstrument->creditCard->holder->taxDocument = new stdClass();
     $this->data->fundingInstrument->creditCard->holder->taxDocument->type = $holder->getTaxDocumentType();
     $this->data->fundingInstrument->creditCard->holder->taxDocument->number = $holder->getTaxDocumentNumber();
     $this->data->fundingInstrument->creditCard->holder->phone = new stdClass();
     $this->data->fundingInstrument->creditCard->holder->phone->countryCode = $holder->getPhoneCountryCode();
     $this->data->fundingInstrument->creditCard->holder->phone->areaCode = $holder->getPhoneAreaCode();
     $this->data->fundingInstrument->creditCard->holder->phone->number = $holder->getPhoneNumber();
 }