Route validation config showing nested Joi configuration objects

route.js

exports.create = {
    description: 'Creates a new cart',

    validate: {
        payload: {
            location: Joi.object({
                postalCode: Joi.string().required().description('Postal Code'),
                city: Joi.string().optional().description('City'),
                state: Joi.string().optional().description('State or Province Code'),
                country: Joi.string().optional().description('Country')
            }).optional().description('Cart Location'),
            storeFrontId: Joi.object({
                USStoreId: Joi.number().required().description('US Store ID')
            }).optional().description('StoreFront ID'),
            currencyCode: Joi.string().optional().description('Currency Code'),
            customerId: Joi.string().optional().description('Customer UUID')
        },
        failAction: 'log'
    },

    handler: function createCart (request, reply) {

      reply(new Cart());
    }
};