public String getPerformanceInsightsKMSKeyId() {
        return this.performanceInsightsKMSKeyId;
    }
<p>
The Amazon Web Services KMS key identifier for encryption of Performance Insights data.
</p>
<p>
The Amazon Web Services KMS key identifier is the key ARN, key ID, alias ARN, or alias name for the KMS key.
</p>
<p>
If you don't specify a value for <code>PerformanceInsightsKMSKeyId</code>, then Amazon RDS uses your default KMS
key. There is a default KMS key for your Amazon Web Services account. Your Amazon Web Services account has a
different default KMS key for each Amazon Web Services Region.
</p>
<p>
Valid for Cluster Type: Multi-AZ DB clusters only
</p>

@return The Amazon Web Services KMS key identifier for encryption of Performance Insights data.</p>
        <p>
        The Amazon Web Services KMS key identifier is the key ARN, key ID, alias ARN, or alias name for the KMS
        key.
        </p>
        <p>
        If you don't specify a value for <code>PerformanceInsightsKMSKeyId</code>, then Amazon RDS uses your
        default KMS key. There is a default KMS key for your Amazon Web Services account. Your Amazon Web
        Services account has a different default KMS key for each Amazon Web Services Region.
        </p>
        <p>
        Valid for Cluster Type: Multi-AZ DB clusters only
aws-java-sdk-rds/src/main/java/com/amazonaws/services/rds/model/CreateDBClusterRequest.java