How to use the azure-iot-device.Client.fromAuthenticationProvider function in azure-iot-device

constructor(connStr: string, protocol: any, sendInterval: number, sendTimeout: number) {
    super();
    this._sendInterval = sendInterval;
    this._sendTimeout = sendTimeout;
    const authProvider = SharedAccessKeyAuthenticationProvider.fromConnectionString(connStr);
    this._client = Client.fromAuthenticationProvider(authProvider, protocol);
    this._client.on('error', (err) => {
      debug('error emitted by client: ' + err.toString());
      this.stop((stopErr) => {
        debug('error stopping: ' + stopErr.toString());
      });
    });

    this._client.on('disconnect', (err) => {
      this.stop((stopErr) => {
        debug('error stopping: ' + stopErr.toString());
      });
    });
  }

provisioningClient.register(function(err, result) {
  if (err) {
    console.log("error registering device: " + err);
  } else {
    console.log('registration succeeded');
    console.log('assigned hub=' + result.registrationState.assignedHub);
    console.log('deviceId=' + result.registrationState.deviceId);
    var tpmAuthenticationProvider = tpmSecurity.TpmAuthenticationProvider.fromTpmSecurityClient(result.registrationState.deviceId, result.registrationState.assignedHub, securityClient);
    var hubClient = Client.fromAuthenticationProvider(tpmAuthenticationProvider, iotHubTransport);

    var connectCallback = function (err) {
      if (err) {
        console.error('Could not connect: ' + err.message);
      } else {
        console.log('Client connected');
        var message = new Message('Hello world');
        hubClient.sendEvent(message, printResultFor('send'));
      }
    };

    hubClient.open(connectCallback);

    function printResultFor(op) {
      return function printResult(err, res) {
        if (err) console.log(op + ' error: ' + err.toString());