public void setExpiration(java.util.Date expiration) {
        this.expiration = expiration;
    }
<p>
The date on which the certificate is set to expire.
</p>

@param expiration
       The date on which the certificate is set to expire.
aws-java-sdk-iam/src/main/java/com/amazonaws/services/identitymanagement/model/ServerCertificateMetadata.java