public function myDefaultAddressIsOf(ShopUserInterface $user, $fullName)
{
list($firstName, $lastName) = explode(' ', $fullName);
/** @var AddressInterface $address */
$address = $this->addressRepository->findOneBy(['firstName' => $firstName, 'lastName' => $lastName]);
Assert::notNull($address, sprintf('The address of "%s" has not been found.', $fullName));
/** @var CustomerInterface $customer */
$customer = $user->getCustomer();
$this->setDefaultAddressOfCustomer($customer, $address);
}