async sendAll({url, links}) {
        for (const target of links) {
            const endpoint = await this.#discoveryService.getEndpoint(target);
            if (endpoint) {
                // Send webmention call
                try {
                    await this.send({source: url, target, endpoint});
                } catch (e) {
                    logging.error('[Webmention] Failed sending via ' + endpoint.href + ': ' + e.message);
                }
            }
        }
    }
Send a webmention call for the links in a resource.
@param {object} resource
@param {URL} resource.url
@param {URL[]} resource.links