How to use the @accordproject/concerto-tools.CodeGen.JSONSchemaVisitor function in @accordproject/concerto-tools

'use strict';

const fs = require('fs');
const path = require('path');
const mkdirp = require('mkdirp');

const Logger = require('@accordproject/concerto-core').Logger;
const ModelLoader = require('@accordproject/concerto-core').ModelLoader;
const Factory = require('@accordproject/concerto-core').Factory;
const Serializer = require('@accordproject/concerto-core').Serializer;
const FileWriter = require('@accordproject/concerto-tools').FileWriter;
const CodeGen = require('@accordproject/concerto-tools').CodeGen;

const GoLangVisitor = CodeGen.GoLangVisitor;
const JavaVisitor = CodeGen.JavaVisitor;
const JSONSchemaVisitor = CodeGen.JSONSchemaVisitor;
const PlantUMLVisitor = CodeGen.PlantUMLVisitor;
const TypescriptVisitor = CodeGen.TypescriptVisitor;
const XmlSchemaVisitor = CodeGen.XmlSchemaVisitor;

/**
 * Utility class that implements the commands exposed by the CLI.
 * @class
 * @memberof module:concerto-cli
 */
class Commands {
    /**
     * Set a default for a file argument
     *
     * @param {object} argv - the inbound argument values object
     * @param {string} argName - the argument name
     * @param {string} argDefaultName - the argument default name