Replacing findOne in service - strapi

strapi_service.js

const { createCoreService } = require('@strapi/strapi').factories;

module.exports = createCoreService('api::pack.pack', ({ strapi }) =>  ({
    
        // Method 3: Replacing a core service
        async findOne(packId, params = {}) {

            const entry = await strapi.db.query('api::pack.pack').findOne({
                select: ['label', 'description', 'version'],
                where: { packId: packId },
                populate: {definitions: true},
            });

            return entry;
        }
    })    
);