app/bundles/LeadBundle/Entity/CustomFieldRepositoryInterface.php

<?php

namespace Mautic\LeadBundle\Entity;

use Doctrine\DBAL\Query\QueryBuilder as DbalQueryBuilder;
use Doctrine\ORM\QueryBuilder as OrmQueryBuilder;

/**
 * Interface CustomFieldRepositoryInterface.
 */
interface CustomFieldRepositoryInterface
{
    /**
     * Return an array of groups supported by the custom fields for this entity.
     *
     * @return array
     */
    public function getFieldGroups();

    /**
     * Get the base DBAL query builder for entities.
     *
     * @return DbalQueryBuilder
     */
    public function getEntitiesDbalQueryBuilder();

    /**
     * Get the base DBAL query builder for entities.
     *
     * @return OrmQueryBuilder
     */
    public function getEntitiesOrmQueryBuilder($order);

    /**
     * Requires table alias.
     *
     * @return mixed
     */
    public function getTableAlias();
}