public String getInterval() {
        return this.interval;
    }
<p>
The interval between scheduled refreshes. Valid values are as follows:
</p>
<ul>
<li>
<p>
<code>MINUTE15</code>: The dataset refreshes every 15 minutes. This value is only supported for incremental
refreshes. This interval can only be used for one schedule per dataset.
</p>
</li>
<li>
<p>
<code>MINUTE30</code>:The dataset refreshes every 30 minutes. This value is only supported for incremental
refreshes. This interval can only be used for one schedule per dataset.
</p>
</li>
<li>
<p>
<code>HOURLY</code>: The dataset refreshes every hour. This interval can only be used for one schedule per
dataset.
</p>
</li>
<li>
<p>
<code>DAILY</code>: The dataset refreshes every day.
</p>
</li>
<li>
<p>
<code>WEEKLY</code>: The dataset refreshes every week.
</p>
</li>
<li>
<p>
<code>MONTHLY</code>: The dataset refreshes every month.
</p>
</li>
</ul>

@return The interval between scheduled refreshes. Valid values are as follows:</p>
        <ul>
        <li>
        <p>
        <code>MINUTE15</code>: The dataset refreshes every 15 minutes. This value is only supported for
        incremental refreshes. This interval can only be used for one schedule per dataset.
        </p>
        </li>
        <li>
        <p>
        <code>MINUTE30</code>:The dataset refreshes every 30 minutes. This value is only supported for
        incremental refreshes. This interval can only be used for one schedule per dataset.
        </p>
        </li>
        <li>
        <p>
        <code>HOURLY</code>: The dataset refreshes every hour. This interval can only be used for one schedule
        per dataset.
        </p>
        </li>
        <li>
        <p>
        <code>DAILY</code>: The dataset refreshes every day.
        </p>
        </li>
        <li>
        <p>
        <code>WEEKLY</code>: The dataset refreshes every week.
        </p>
        </li>
        <li>
        <p>
        <code>MONTHLY</code>: The dataset refreshes every month.
        </p>
        </li>
@see RefreshInterval
aws-java-sdk-quicksight/src/main/java/com/amazonaws/services/quicksight/model/RefreshFrequency.java