Product.Model.Prices.mapping.php

<?php

use Money\Money;
use Product\Model\Prices;

return [
    Prices::class => [
        'type' => 'embeddedDocument',
        'embedOne' => [
            [
                'fieldName' => 'price',
                'targetDocument' => Money::class
            ],
            [
                'fieldName' => 'supplierPrice',
                'targetDocument' => Money::class
            ],
            [
                'fieldName' => 'suggestedPrice',
                'targetDocument' => Money::class
            ],
        ]
    ]
];

Product.Model.Video.mapping.php

<?php

use Doctrine\ODM\MongoDB\Types\Type;
use Product\Model\Video;

return [
    Video::class => [
        'type' => 'embeddedDocument',
        'fields' => [
            [
                'type' => Type::STRING,
                'fieldName' => 'url',
            ],
        ],
    ]
];