public void setTls(VpcConnectivityTls tls) {
        this.tls = tls;
    }
<p>
TLS authentication type details for VPC connectivity.
</p>

@param tls
       <p>
       TLS authentication type details for VPC connectivity.
       </p>
aws-java-sdk-kafka/src/main/java/com/amazonaws/services/kafka/model/VpcConnectivityClientAuthentication.java