public Integer getManualSnapshotRetentionPeriod() {
        return this.manualSnapshotRetentionPeriod;
    }
<p>
The default number of days to retain a manual snapshot.
</p>
<p>
If the value is <code>-1</code>, the snapshot is retained indefinitely.
</p>
<p>
This setting doesn't change the retention period of existing snapshots.
</p>
<p>
Valid values: Either <code>-1</code> or an integer between 1 and 3,653
</p>

@return The default number of days to retain a manual snapshot.</p>
        <p>
        If the value is <code>-1</code>, the snapshot is retained indefinitely.
        </p>
        <p>
        This setting doesn't change the retention period of existing snapshots.
        </p>
        <p>
        Valid values: Either <code>-1</code> or an integer between 1 and 3,653
aws-java-sdk-securityhub/src/main/java/com/amazonaws/services/securityhub/model/AwsRedshiftClusterDetails.java