<?php

/*
 * This file is part of the Sylius package.
 *
 * (c) Paweł Jędrzejewski
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

declare(strict_types=1);

namespace Sylius\Component\Inventory\Model;

class InventoryUnit implements InventoryUnitInterface
{
    /** @var mixed */
    protected $id;

    /** @var StockableInterface */
    protected $stockable;

    /**
     * {@inheritdoc}
     */
    public function getId()
    {
        return $this->id;
    }

    /**
     * {@inheritdoc}
     */
    public function getStockable(): ?StockableInterface
    {
        return $this->stockable;
    }

    public function setStockable(StockableInterface $stockable): void
    {
        $this->stockable = $stockable;
    }
}

<?php

/*
 * This file is part of the Sylius package.
 *
 * (c) Paweł Jędrzejewski
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

declare(strict_types=1);

namespace Sylius\Component\Inventory\Model;

class InventoryUnit implements InventoryUnitInterface
{
    /**
     * @var mixed
     */
    protected $id;

    /**
     * @var StockableInterface
     */
    protected $stockable;

    /**
     * {@inheritdoc}
     */
    public function getId()
    {
        return $this->id;
    }

    /**
     * {@inheritdoc}
     */
    public function getStockable(): ?StockableInterface
    {
        return $this->stockable;
    }

    public function setStockable(StockableInterface $stockable): void
    {
        $this->stockable = $stockable;
    }
}

--- 
+++ 
@@ -15,14 +15,10 @@
 
 class InventoryUnit implements InventoryUnitInterface
 {
-    /**
-     * @var mixed
-     */
+    /** @var mixed */
     protected $id;
 
-    /**
-     * @var StockableInterface
-     */
+    /** @var StockableInterface */
     protected $stockable;
 
     /**
Use oneline phpdocs for property type info
