How to use the @twilio/webrtc.MediaStreamTrack function in @twilio/webrtc

'use strict';

const asLocalTrack = require('./util').asLocalTrack;
const buildLogLevels = require('./util').buildLogLevels;
const getUserMedia = require('@twilio/webrtc').getUserMedia;
const LocalAudioTrack = require('./media/track/es5/localaudiotrack');
const LocalDataTrack = require('./media/track/es5/localdatatrack');
const LocalVideoTrack = require('./media/track/es5/localvideotrack');
const MediaStreamTrack = require('@twilio/webrtc').MediaStreamTrack;
const Log = require('./util/log');
const DEFAULT_LOG_LEVEL = require('./util/constants').DEFAULT_LOG_LEVEL;
const workaround180748 = require('./webaudio/workaround180748');

// This is used to make out which createLocalTracks() call a particular Log
// statement belongs to. Each call to createLocalTracks() increments this
// counter.
let createLocalTrackCalls = 0;

/**
 * Request {@link LocalTrack}s. By default, it requests a
 * {@link LocalAudioTrack} and a {@link LocalVideoTrack}.
 * @param {CreateLocalTracksOptions} [options]
 * @returns {Promise>}
 * @example
 * var Video = require('twilio-video');

'use strict';

const util = require('./util');
const E = require('./util/constants').typeErrors;
const LocalAudioTrack = require('./media/track/es5/localaudiotrack');
const LocalDataTrack = require('./media/track/es5/localdatatrack');
const LocalVideoTrack = require('./media/track/es5/localvideotrack');
const MediaStreamTrack = require('@twilio/webrtc').MediaStreamTrack;
const Participant = require('./participant');
const LocalAudioTrackPublication = require('./media/track/localaudiotrackpublication');
const LocalDataTrackPublication = require('./media/track/localdatatrackpublication');
const LocalVideoTrackPublication = require('./media/track/localvideotrackpublication');

/**
 * A {@link LocalParticipant} represents the local {@link Participant} in a
 * {@link Room}.
 * @extends Participant
 * @property {Map} audioTracks -
 *    The {@link LocalParticipant}'s {@link LocalAudioTrackPublication}s
 * @property {Map} dataTracks -
 *    The {@link LocalParticipant}'s {@link LocalDataTrackPublication}s
 * @property {Map} tracks -
 *    The {@link LocalParticipant}'s {@link LocalTrackPublication}s
 * @property {Map} videoTracks -