private function addAPerson(array $person, ObjectManager $manager)
    {
        $p = new Person();

        foreach ($person as $key => $value) {
            switch ($key) {
                case 'CountryOfBirth':
                case 'Nationality':
                    $value = $this->getCountry($value);
                    break;
                case 'Birthdate':
                    $value = new \DateTime($value);
                    break;
                case 'center':
                case 'maritalStatus':
                    $value = $this->getReference($value);
                    break;
            }
            
            //try to add the data using the setSomething function,
            // if not possible, fallback to addSomething function
            if (method_exists($p, 'set'.$key)) {
                call_user_func(array($p, 'set'.$key), $value);
            } elseif (method_exists($p, 'add'.$key)) {
                // if we have a "addSomething", we may have multiple items to add
                // so, we set the value in an array if it is not an array, and 
                // will call the function addSomething multiple times
                if (!is_array($value)) {
                    $value = array($value);
                }
                
                foreach($value as $v) {
                    if ($v !== NULL) {
                        call_user_func(array($p, 'add'.$key), $v);
                    }
                }
                
            } 
        }

        $manager->persist($p);
        echo "add person'".$p->__toString()."'\n";
    }