Person.php

<?php

/** @ORM */
class Person
{
    /** @ORM */
    private $adres;

    /** @ORM */
    private $bus;

    /** @ORM */
    private $stad;

    /** @ORM */
    private $land;

    public function setAddress(Address $address)
    {
        $this->adres = $address->getAdres();
        $this->bus = $address->getBus();
        $this->stad = $address->getStad();
        $this->land = $address->getLand();
    }

    public function getAddress()
    {
        return new Address(
            $this->adres,
            $this->bus,
            $this->stad,
            $this->land
        );
    }

    // enzovoort ...
}

class Address
{
    private $adres;
    private $bus;
    private $stad;
    private $land;

    public function __construct($adres, $bus, $stad, $land)
    {
        $this->adres = $adres;
        $this->bus = $bus;
        $this->stad = $stad;
        $this->land = $land;
    }

    public function getAdres()
    {
        return $this->adres;
    }

    public function getBus()
    {
        return $this->bus;
    }

    public function getStad()
    {
        return $this->stad;
    }

    public function getLand()
    {
        return $this->land;
    }
}