chamilo-lms/plugin/xapi/php-xapi/repository-doctrine-orm/metadata/Extensions.orm.xml

<doctrine-mapping xmlns="http://doctrine-project.org/schemas/orm/doctrine-mapping"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://doctrine-project.org/schemas/orm/doctrine-mapping
        http://doctrine-project.org/schemas/orm/doctrine-mapping.xsd">

    <entity name="XApi\Repository\Doctrine\Mapping\Extensions" table="xapi_extensions">
        <id name="identifier" type="integer">
            <generator strategy="AUTO" />
        </id>

        <field name="extensions" type="json_array" />
    </entity>
</doctrine-mapping>