How to use the swagger2openapi.targetVersion function in swagger2openapi

const upload = multer({ storage: storage });
const fetch = require('node-fetch');

const yaml = require('yaml');

const converter = require('swagger2openapi');
const validator = require('oas-validator');
const s2oVersion = require('swagger2openapi/package.json').version;
const recurse = require('reftools/lib/recurse.js').recurse;

var status = {};
status.startTime = new Date();
status.conversions = 0;
status.validations = 0;
status.badges = 0;
status.targetVersion = converter.targetVersion;
status.s2oVersion = s2oVersion;
status.self = require('./package.json');

function getObj(body,payload){
    var obj = {};
    try {
        obj = JSON.parse(body);
    }
    catch(ex) {
        try {
            obj = yaml.parse(body);
            payload.yaml = true;
        }
        catch(ex) {
            console.log(body);
        }