@Override
    public Certificate modifyCertificates(ModifyCertificatesRequest request) {
        request = beforeClientExecution(request);
        return executeModifyCertificates(request);
    }
<p>
Override the system-default Secure Sockets Layer/Transport Layer Security (SSL/TLS) certificate for Amazon RDS
for new DB instances, or remove the override.
</p>
<p>
By using this operation, you can specify an RDS-approved SSL/TLS certificate for new DB instances that is
different from the default certificate provided by RDS. You can also use this operation to remove the override,
so that new DB instances use the default certificate provided by RDS.
</p>
<p>
You might need to override the default certificate in the following situations:
</p>
<ul>
<li>
<p>
You already migrated your applications to support the latest certificate authority (CA) certificate, but the new
CA certificate is not yet the RDS default CA certificate for the specified Amazon Web Services Region.
</p>
</li>
<li>
<p>
RDS has already moved to a new default CA certificate for the specified Amazon Web Services Region, but you are
still in the process of supporting the new CA certificate. In this case, you temporarily need additional time to
finish your application changes.
</p>
</li>
</ul>
<p>
For more information about rotating your SSL/TLS certificate for RDS DB engines, see <a
href="https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/UsingWithRDS.SSL-certificate-rotation.html">
Rotating Your SSL/TLS Certificate</a> in the <i>Amazon RDS User Guide</i>.
</p>
<p>
For more information about rotating your SSL/TLS certificate for Aurora DB engines, see <a
href="https://docs.aws.amazon.com/AmazonRDS/latest/AuroraUserGuide/UsingWithRDS.SSL-certificate-rotation.html">
Rotating Your SSL/TLS Certificate</a> in the <i>Amazon Aurora User Guide</i>.
</p>

@param modifyCertificatesRequest
@return Result of the ModifyCertificates operation returned by the service.
@throws CertificateNotFoundException
        <code>CertificateIdentifier</code> doesn't refer to an existing certificate.
@sample AmazonRDS.ModifyCertificates
@see <a href="http://docs.aws.amazon.com/goto/WebAPI/rds-2014-10-31/ModifyCertificates" target="_top">AWS API
     Documentation</a>
aws-java-sdk-rds/src/main/java/com/amazonaws/services/rds/AmazonRDSClient.java