public VirtualGatewayListenerTlsCertificate withAcm(VirtualGatewayListenerTlsAcmCertificate acm) {
        setAcm(acm);
        return this;
    }
<p>
A reference to an object that represents an Certificate Manager certificate.
</p>

@param acm
       A reference to an object that represents an Certificate Manager certificate.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-appmesh/src/main/java/com/amazonaws/services/appmesh/model/VirtualGatewayListenerTlsCertificate.java