public Integer getPerformanceInsightsRetentionPeriod() {
        return this.performanceInsightsRetentionPeriod;
    }
<p>
The number of days to retain Performance Insights data. The default is 7 days. The following values are valid:
</p>
<ul>
<li>
<p>
7
</p>
</li>
<li>
<p>
<i>month</i> * 31, where <i>month</i> is a number of months from 1-23
</p>
</li>
<li>
<p>
731
</p>
</li>
</ul>
<p>
For example, the following values are valid:
</p>
<ul>
<li>
<p>
93 (3 months * 31)
</p>
</li>
<li>
<p>
341 (11 months * 31)
</p>
</li>
<li>
<p>
589 (19 months * 31)
</p>
</li>
<li>
<p>
731
</p>
</li>
</ul>
<p>
If you specify a retention period such as 94, which isn't a valid value, RDS issues an error.
</p>

@return The number of days to retain Performance Insights data. The default is 7 days. The following values are
        valid:</p>
        <ul>
        <li>
        <p>
        7
        </p>
        </li>
        <li>
        <p>
        <i>month</i> * 31, where <i>month</i> is a number of months from 1-23
        </p>
        </li>
        <li>
        <p>
        731
        </p>
        </li>
        </ul>
        <p>
        For example, the following values are valid:
        </p>
        <ul>
        <li>
        <p>
        93 (3 months * 31)
        </p>
        </li>
        <li>
        <p>
        341 (11 months * 31)
        </p>
        </li>
        <li>
        <p>
        589 (19 months * 31)
        </p>
        </li>
        <li>
        <p>
        731
        </p>
        </li>
        </ul>
        <p>
        If you specify a retention period such as 94, which isn't a valid value, RDS issues an error.
aws-java-sdk-rds/src/main/java/com/amazonaws/services/rds/model/RestoreDBInstanceFromS3Request.java