@java.lang.Override
    public int getRetentionPeriodDays() {
      return retentionPeriodDays_;
    }
<pre>
Number of days of history that must be retained.
</pre>

<code>int32 retention_period_days = 14;</code>

@return The retentionPeriodDays.
java-storageinsights/proto-google-cloud-storageinsights-v1/src/main/java/com/google/cloud/storageinsights/v1/DatasetConfig.java