How to use the @aws-cdk/aws-certificatemanager.DnsValidatedCertificate function in @aws-cdk/aws-certificatemanager

this.listener = this.loadBalancer.addListener('PublicListener', {
      protocol,
      open: true
    });
    this.targetGroup = this.listener.addTargets('ECS', targetProps);

    if (protocol === ApplicationProtocol.HTTPS) {
      if (typeof props.domainName === 'undefined' || typeof props.domainZone === 'undefined') {
        throw new Error('A domain name and zone is required when using the HTTPS protocol');
      }

      if (props.certificate !== undefined) {
        this.certificate = props.certificate;
      } else {
        this.certificate = new DnsValidatedCertificate(this, 'Certificate', {
          domainName: props.domainName,
          hostedZone: props.domainZone
        });
      }
    }
    if (this.certificate !== undefined) {
      this.listener.addCertificateArns('Arns', [this.certificate.certificateArn]);
    }

    let domainName = this.loadBalancer.loadBalancerDnsName;
    if (typeof props.domainName !== 'undefined') {
      if (typeof props.domainZone === 'undefined') {
        throw new Error('A Route53 hosted domain zone name is required to configure the specified domain name');
      }

      const record = new ARecord(this, "DNS", {