How to use the protobufjs/minimal.Writer function in protobufjs

/*eslint-disable block-scoped-var, no-redeclare, no-control-regex, no-prototype-builtins*/
"use strict";

var $protobuf = require("protobufjs/minimal");

// Common aliases
var $Reader = $protobuf.Reader, $Writer = $protobuf.Writer, $util = $protobuf.util;

// Exported root namespace
var $root = $protobuf.roots["default"] || ($protobuf.roots["default"] = {});

$root.selenium = (function() {

    /**
     * Namespace selenium.
     * @exports selenium
     * @namespace
     */
    var selenium = {};

    selenium.proto = (function() {

        /**

/*eslint-disable block-scoped-var, no-redeclare, no-control-regex, no-prototype-builtins*/
"use strict";

var $protobuf = require("protobufjs/minimal");

// Common aliases
var $Reader = $protobuf.Reader, $Writer = $protobuf.Writer, $util = $protobuf.util;

// Exported root namespace
var $root = $protobuf.roots["default"] || ($protobuf.roots["default"] = {});

$root.github = (function() {

    /**
     * Namespace github.
     * @exports github
     * @namespace
     */
    var github = {};

    github.proto = (function() {

        /**

/*eslint-disable block-scoped-var, no-redeclare, no-control-regex, no-prototype-builtins*/
"use strict";

var $protobuf = require("protobufjs/minimal");

// Common aliases
var $Reader = $protobuf.Reader, $Writer = $protobuf.Writer, $util = $protobuf.util;

// Exported root namespace
var $root = $protobuf.roots["default"] || ($protobuf.roots["default"] = {});

$root.master = (function() {

    /**
     * Namespace master.
     * @exports master
     * @namespace
     */
    var master = {};

    master.Player = (function() {

        /**

/*eslint-disable block-scoped-var, no-redeclare, no-control-regex, no-prototype-builtins*/
"use strict";

var $protobuf = require("protobufjs/minimal");

// Common aliases
var $Reader = $protobuf.Reader, $Writer = $protobuf.Writer, $util = $protobuf.util;

// Exported root namespace
var $root = $protobuf.roots["default"] || ($protobuf.roots["default"] = {});

$root.Address = (function() {

    /**
     * Properties of an Address.
     * @exports IAddress
     * @interface IAddress
     * @property {string} [addr] Address addr
     * @property {number} [code] Address code
     */

    /**
     * Constructs a new Address.

/*eslint-disable block-scoped-var, id-length, no-control-regex, no-magic-numbers, no-prototype-builtins, no-redeclare, no-shadow, no-var, sort-vars*/
"use strict";

var $protobuf = require("protobufjs/minimal");

// Common aliases
var $Reader = $protobuf.Reader, $Writer = $protobuf.Writer, $util = $protobuf.util;

// Exported root namespace
var $root = $protobuf.roots["default"] || ($protobuf.roots["default"] = {});

$root.api_proto = (function() {

    /**
     * Namespace api_proto.
     * @exports api_proto
     * @namespace
     */
    var api_proto = {};

    api_proto.Request = (function() {

        /**

/*eslint-disable block-scoped-var, no-redeclare, no-control-regex, no-prototype-builtins*/
"use strict";

var $protobuf = require("protobufjs/minimal");

// Common aliases
var $Reader = $protobuf.Reader, $Writer = $protobuf.Writer, $util = $protobuf.util;

// Exported root namespace
var $root = $protobuf.roots["default"] || ($protobuf.roots["default"] = {});

$root.mozaic = (function() {

    /**
     * Namespace mozaic.
     * @exports mozaic
     * @namespace
     */
    var mozaic = {};

    mozaic.client_server = (function() {

        /**

*
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
/*eslint-disable block-scoped-var, no-redeclare, no-control-regex, no-prototype-builtins*/
"use strict";

var $protobuf = require("protobufjs/minimal");

// Common aliases
var $Reader = $protobuf.Reader, $Writer = $protobuf.Writer, $util = $protobuf.util;

// Exported root namespace
var $root = $protobuf.roots["echo-client"] || ($protobuf.roots["echo-client"] = {});

$root.plexus = (function() {

    /**
     * Namespace plexus.
     * @exports plexus
     * @namespace
     */
    var plexus = {};

    plexus.interop = (function() {

        /**

/*eslint-disable block-scoped-var, no-redeclare, no-control-regex, no-prototype-builtins*/
"use strict";

var $protobuf = require("protobufjs/minimal");

// Common aliases
var $Reader = $protobuf.Reader, $Writer = $protobuf.Writer, $util = $protobuf.util;

// Exported root namespace
var $root = $protobuf.roots["default"] || ($protobuf.roots["default"] = {});

$root.messages = (function() {

    /**
     * Namespace messages.
     * @exports messages
     * @namespace
     */
    var messages = {};

    messages.HelloRequest = (function() {

        /**

/*eslint-disable block-scoped-var, no-redeclare, no-control-regex, no-prototype-builtins*/
"use strict";

var $protobuf = require("protobufjs/minimal");

// Common aliases
var $Reader = $protobuf.Reader, $Writer = $protobuf.Writer, $util = $protobuf.util;

// Exported root namespace
var $root = $protobuf.roots["default"] || ($protobuf.roots["default"] = {});

$root.actor = (function() {

    /**
     * Namespace actor.
     * @exports actor
     * @namespace
     */
    var actor = {};

    actor.PID = (function() {

        /**

}
    if (key.length > KEY_LENGTH_LIMIT) {
      throw new SigverError(SigverError.KEY_ERROR, `The key length exceeds the limit of ${KEY_LENGTH_LIMIT} characters`);
    }
  }

  validateId(id) {
    if (typeof id !== 'string') {
      throw new SigverError(SigverError.MESSAGE_ERROR, `The joining id is not a string`);
    }
  }
}

/*eslint-disable block-scoped-var, no-redeclare, no-control-regex, no-prototype-builtins*/
const $Reader = $protobuf.Reader;
const $Writer = $protobuf.Writer;
const $util = $protobuf.util;

const $root = $protobuf.roots["default"] || ($protobuf.roots["default"] = {});

const Incoming = $root.Incoming = (() => {

    function Incoming(properties) {
        if (properties) for (let keys = Object.keys(properties), i = 0; i < keys.length; ++i) if (properties[keys[i]] != null) this[keys[i]] = properties[keys[i]];
    }

    Incoming.prototype.content = null;
    Incoming.prototype.joined = false;
    Incoming.prototype.ping = false;
    Incoming.prototype.pong = false;

    let $oneOfFields;