/**
  * @param Passenger $passenger
  * @return PassengerListDTO
  */
 public function passengerToPassengerListDTO(Passenger $passenger)
 {
     $passengerListDTO = new PassengerListDTO();
     $passengerListDTO->id = $passenger->getId();
     $passengerListDTO->gender = $passenger->getGenderAsString();
     $passengerListDTO->firstname = $passenger->getFirstname();
     $passengerListDTO->telephone = $passenger->getTelephone();
     $passengerListDTO->lastname = $passenger->getLastname();
     $passengerListDTO->street = $passenger->getAddress()->getStreet();
     $passengerListDTO->city = $passenger->getAddress()->getCity();
     $passengerListDTO->isInWheelChair = $passenger->getIsInWheelChairAsString();
     $passengerListDTO->hasMonthlyBilling = $passenger->getMonthlyBillingAsString();
     $passengerListDTO->insurances = $passenger->getInsurancesAsString();
     return $passengerListDTO;
 }