public function __construct()
 {
    parent::__construct();
    $this->setMasterVariant(new Variant());
    $this->taxons = new ArrayCollection();
    $this->variantSelectionMethod = self::VARIANT_SELECTION_CHOICE;
  }

$this->setMasterVariant(new Variant());

public function __construct()
 {
    parent::__construct();
    $this->setMasterVariant(new VariantNew());
    var_dump($this->getMasetVariant());
  }

var_dump($this->getMasetVariant());