close(listen_socket) {
        // Fall back to self listen socket if none provided by user
        const socket = listen_socket || this.#listen_socket;
        if (socket) {
            // Close the determined socket
            uWebSockets.us_listen_socket_close(socket);

            // Nullify the local socket reference if it was used
            if (!listen_socket) this.#listen_socket = null;

            return true;
        }
        return false;
    }
Stops/Closes HyperExpress webserver instance.

@param {uWebSockets.us_listen_socket=} listen_socket Optional
@returns {Boolean}