/**
* @throws Exception if the key is unkown
* @return \model\Product
*/
public function getSelectedProduct()
{
assert($this->navigation->customerWantsToSeeProduct());
$unique = $this->navigation->getProductID();
$product = $this->catalog->getProductFromUnique($unique);
if ($product != null) {
return $product;
}
throw new \Exception("unknown key");
}
