chamilo/chamilo-lms

<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\Verb" table="xapi_verb">
        <id name="identifier" type="integer">
            <generator strategy="AUTO" />
        </id>

        <field name="id" type="string" />
        <field name="display" type="json_array" />
    </entity>
</doctrine-mapping>