/**
  * @param User $user
  * @return array|void
  * @throws UserNotLoggedInException
  * @throws \TripServiceKata\Exception\DependentClassCalledDuringUnitTestException
  */
 private function getTripsWithMyFriend(User $user)
 {
     $loggedUser = $this->userSession->getLoggedUser();
     $this->isLogged($loggedUser);
     return $user->isMyFriend($loggedUser) ? $this->tripDao->findListTripByUser($user) : array();
 }